Games & mathematics
Seven Ways to See 24
What makes a 24 puzzle difficult? I classified all 1,362 solvable hands by their easiest solution, from familiar factors to fractions hiding in plain sight.
In Target Number, the rules for 24 are simple: take four numbers, use each once, and combine them with addition, subtraction, multiplication, and division to make 24. The arithmetic is usually manageable. Seeing what to do with the numbers is the interesting part.
I started wondering whether that act of recognition could be organized. Finding 6 × 4 seems easier than finding 35 − 11, even though both finish at the same place. And a hand that asks you to construct two differences has something in common with other hands that use the same pattern.
So I worked through all 1,820 distinct four-number combinations from 1 through 13, allowing repeats. Of those, 1,362 can make 24. I then classified each solvable hand by the simplest kind of solution available to it, using a proposed hierarchy of seven levels.
One hand, three very different ideas
Before ranking anything, there is a trap to avoid: the first solution you find may make a puzzle look much harder than it is. Take these four numbers.
(9 × 8) ÷ (5 − 2) = 24
(9 − 5) × (8 − 2) = 24
2 + 5 + 8 + 9 = 24
The first route builds 72 and divides by 3. The second builds 4 × 6. The third simply adds the numbers. Under this hierarchy, those are Level 5, Level 3, and Level 1 solutions to the same hand. The hand gets Level 1.
That is the central rule of the analysis: rank the solutions first, then give each hand its lowest available level. Every solution uses three operations, so counting operations would not distinguish any of these puzzles.
The seven levels
This is my proposed order for teaching the patterns. It is a hypothesis about what is easier to recognize, rather than a ranking measured from players' solve times. Try the examples below before revealing their solutions. Each hand's easiest solution falls at the level shown.
1Direct arithmetic
Start with the simplest check: do the numbers already add to 24? This level also includes routes using only addition and subtraction, or only multiplication, without negative intermediate values.
Reveal solutionHide solution for level 1
2 + 4 + 7 + 11 = 24
No factor needs to be constructed. The four numbers already make the total.
Browse all 226 problemsHide 226 problems · Level 1
Ordered by the four numbers. Select a hand to reveal one of its easiest solutions. Scroll the list to see every problem in this level.
11212Solution
((12 × 2) × 1) × 1 = 24
1138Solution
8 × (3 × (1 × 1)) = 24
1146Solution
6 × (4 × (1 × 1)) = 24
11913Solution
(13 + (1 + 1)) + 9 = 24
111012Solution
(10 + (1 + 1)) + 12 = 24
111111Solution
(11 + (1 + 1)) + 11 = 24
111113Solution
13 + ((11 + 1) − 1) = 24
111212Solution
((12 + 1) − 1) + 12 = 24
111313Solution
13 + (13 − (1 + 1)) = 24
1226Solution
6 × ((2 × 1) × 2) = 24
1234Solution
(3 × (2 × 1)) × 4 = 24
12813Solution
((13 + 1) + 2) + 8 = 24
12912Solution
((12 + 1) + 2) + 9 = 24
121011Solution
((10 + 1) + 11) + 2 = 24
121013Solution
((13 + 10) − 1) + 2 = 24
121112Solution
((12 + 11) − 1) + 2 = 24
121213Solution
13 + ((12 + 1) − 2) = 24
13713Solution
((13 + 1) + 3) + 7 = 24
13812Solution
((12 + 1) + 3) + 8 = 24
13911Solution
((11 + 1) + 3) + 9 = 24
13913Solution
((13 + 3) − 1) + 9 = 24
131010Solution
((10 + 1) + 10) + 3 = 24
131012Solution
((12 + 10) − 1) + 3 = 24
131111Solution
((11 + 11) − 1) + 3 = 24
131313Solution
13 + ((13 + 1) − 3) = 24
14613Solution
((13 + 1) + 4) + 6 = 24
14712Solution
((12 + 1) + 4) + 7 = 24
14811Solution
((11 + 1) + 4) + 8 = 24
14813Solution
((13 + 4) − 1) + 8 = 24
14910Solution
((10 + 1) + 4) + 9 = 24
14912Solution
((12 + 4) − 1) + 9 = 24
141011Solution
((11 + 10) − 1) + 4 = 24
15513Solution
((13 + 1) + 5) + 5 = 24
15612Solution
((12 + 1) + 5) + 6 = 24
15711Solution
((11 + 1) + 5) + 7 = 24
15713Solution
((13 + 5) − 1) + 7 = 24
15810Solution
((10 + 1) + 5) + 8 = 24
15812Solution
((12 + 5) − 1) + 8 = 24
1599Solution
(9 + (5 + 1)) + 9 = 24
15911Solution
((11 + 5) − 1) + 9 = 24
151010Solution
((10 + 10) − 1) + 5 = 24
16611Solution
((11 + 1) + 6) + 6 = 24
16613Solution
((13 + 6) − 1) + 6 = 24
16710Solution
((10 + 1) + 6) + 7 = 24
16712Solution
((12 + 6) − 1) + 7 = 24
1689Solution
(8 + (6 + 1)) + 9 = 24
16811Solution
((11 + 6) − 1) + 8 = 24
16910Solution
((10 + 6) − 1) + 9 = 24
1779Solution
((7 + 1) + 7) + 9 = 24
17711Solution
((11 + 7) − 1) + 7 = 24
1788Solution
((7 + 1) + 8) + 8 = 24
17810Solution
((10 + 7) − 1) + 8 = 24
1799Solution
((9 + 7) − 1) + 9 = 24
1889Solution
((8 + 8) − 1) + 9 = 24
2223Solution
((2 × 2) × 2) × 3 = 24
22713Solution
((13 + 2) + 2) + 7 = 24
22812Solution
((12 + 2) + 2) + 8 = 24
22911Solution
((11 + 2) + 2) + 9 = 24
221010Solution
((10 + 10) + 2) + 2 = 24
221113Solution
((13 + 11) − 2) + 2 = 24
221212Solution
((12 + 12) − 2) + 2 = 24
23613Solution
((13 + 2) + 3) + 6 = 24
23712Solution
((12 + 2) + 3) + 7 = 24
23811Solution
((11 + 2) + 3) + 8 = 24
23910Solution
((10 + 2) + 3) + 9 = 24
231013Solution
((13 + 10) − 2) + 3 = 24
231112Solution
((12 + 11) − 2) + 3 = 24
231213Solution
13 + ((12 + 2) − 3) = 24
24513Solution
((13 + 2) + 4) + 5 = 24
24612Solution
((12 + 2) + 4) + 6 = 24
24711Solution
((11 + 2) + 4) + 7 = 24
24810Solution
((10 + 2) + 4) + 8 = 24
2499Solution
(9 + (4 + 2)) + 9 = 24
24913Solution
((13 + 4) − 2) + 9 = 24
241012Solution
((12 + 10) − 2) + 4 = 24
241111Solution
((11 + 11) − 2) + 4 = 24
241313Solution
13 + ((13 + 2) − 4) = 24
25512Solution
((12 + 2) + 5) + 5 = 24
25611Solution
((11 + 2) + 5) + 6 = 24
25710Solution
((10 + 2) + 5) + 7 = 24
2589Solution
(8 + (5 + 2)) + 9 = 24
25813Solution
((13 + 5) − 2) + 8 = 24
25912Solution
((12 + 5) − 2) + 9 = 24
251011Solution
((11 + 10) − 2) + 5 = 24
26610Solution
((10 + 2) + 6) + 6 = 24
2679Solution
((6 + 2) + 7) + 9 = 24
26713Solution
((13 + 6) − 2) + 7 = 24
2688Solution
((6 + 2) + 8) + 8 = 24
26812Solution
((12 + 6) − 2) + 8 = 24
26911Solution
((11 + 6) − 2) + 9 = 24
261010Solution
((10 + 10) − 2) + 6 = 24
2778Solution
((7 + 2) + 7) + 8 = 24
27712Solution
((12 + 7) − 2) + 7 = 24
27811Solution
((11 + 7) − 2) + 8 = 24
27910Solution
((10 + 7) − 2) + 9 = 24
28810Solution
((10 + 8) − 2) + 8 = 24
2899Solution
((9 + 8) − 2) + 9 = 24
33513Solution
((13 + 3) + 3) + 5 = 24
33612Solution
((12 + 3) + 3) + 6 = 24
33711Solution
((11 + 3) + 3) + 7 = 24
33810Solution
((10 + 3) + 3) + 8 = 24
3399Solution
(9 + (3 + 3)) + 9 = 24
331113Solution
((13 + 11) − 3) + 3 = 24
331212Solution
((12 + 12) − 3) + 3 = 24
34413Solution
((13 + 3) + 4) + 4 = 24
34512Solution
((12 + 3) + 4) + 5 = 24
34611Solution
((11 + 3) + 4) + 6 = 24
34710Solution
((10 + 3) + 4) + 7 = 24
3489Solution
(8 + (4 + 3)) + 9 = 24
341013Solution
((13 + 10) − 3) + 4 = 24
341112Solution
((12 + 11) − 3) + 4 = 24
341213Solution
13 + ((12 + 3) − 4) = 24
35511Solution
((11 + 3) + 5) + 5 = 24
35610Solution
((10 + 3) + 5) + 6 = 24
3579Solution
((5 + 3) + 7) + 9 = 24
3588Solution
((5 + 3) + 8) + 8 = 24
35913Solution
((13 + 5) − 3) + 9 = 24
351012Solution
((12 + 10) − 3) + 5 = 24
351111Solution
((11 + 11) − 3) + 5 = 24
351313Solution
13 + ((13 + 3) − 5) = 24
3669Solution
((6 + 3) + 6) + 9 = 24
3678Solution
((6 + 3) + 7) + 8 = 24
36813Solution
((13 + 6) − 3) + 8 = 24
36912Solution
((12 + 6) − 3) + 9 = 24
361011Solution
((11 + 10) − 3) + 6 = 24
3777Solution
((7 + 3) + 7) + 7 = 24
37713Solution
((13 + 7) − 3) + 7 = 24
37812Solution
((12 + 7) − 3) + 8 = 24
37911Solution
((11 + 7) − 3) + 9 = 24
371010Solution
((10 + 10) − 3) + 7 = 24
38811Solution
((11 + 8) − 3) + 8 = 24
38910Solution
((10 + 8) − 3) + 9 = 24
3999Solution
((9 + 9) − 3) + 9 = 24
44412Solution
((12 + 4) + 4) + 4 = 24
44511Solution
((11 + 4) + 4) + 5 = 24
44610Solution
((10 + 4) + 4) + 6 = 24
4479Solution
((4 + 4) + 7) + 9 = 24
4488Solution
((4 + 4) + 8) + 8 = 24
441113Solution
((13 + 11) − 4) + 4 = 24
441212Solution
((12 + 12) − 4) + 4 = 24
45510Solution
((10 + 4) + 5) + 5 = 24
4569Solution
((5 + 4) + 6) + 9 = 24
4578Solution
((5 + 4) + 7) + 8 = 24
451013Solution
((13 + 10) − 4) + 5 = 24
451112Solution
((12 + 11) − 4) + 5 = 24
451213Solution
13 + ((12 + 4) − 5) = 24
4668Solution
((6 + 4) + 6) + 8 = 24
4677Solution
((6 + 4) + 7) + 7 = 24
46913Solution
((13 + 6) − 4) + 9 = 24
461012Solution
((12 + 10) − 4) + 6 = 24
461111Solution
((11 + 11) − 4) + 6 = 24
461313Solution
13 + ((13 + 4) − 6) = 24
47813Solution
((13 + 7) − 4) + 8 = 24
47912Solution
((12 + 7) − 4) + 9 = 24
471011Solution
((11 + 10) − 4) + 7 = 24
48812Solution
((12 + 8) − 4) + 8 = 24
48911Solution
((11 + 8) − 4) + 9 = 24
481010Solution
((10 + 10) − 4) + 8 = 24
49910Solution
((10 + 9) − 4) + 9 = 24
5559Solution
((5 + 5) + 5) + 9 = 24
5568Solution
((5 + 5) + 6) + 8 = 24
5577Solution
((5 + 5) + 7) + 7 = 24
551113Solution
((13 + 11) − 5) + 5 = 24
551212Solution
((12 + 12) − 5) + 5 = 24
5667Solution
((6 + 5) + 6) + 7 = 24
561013Solution
((13 + 10) − 5) + 6 = 24
561112Solution
((12 + 11) − 5) + 6 = 24
561213Solution
13 + ((12 + 5) − 6) = 24
57913Solution
((13 + 7) − 5) + 9 = 24
571012Solution
((12 + 10) − 5) + 7 = 24
571111Solution
((11 + 11) − 5) + 7 = 24
571313Solution
13 + ((13 + 5) − 7) = 24
58813Solution
((13 + 8) − 5) + 8 = 24
58912Solution
((12 + 8) − 5) + 9 = 24
581011Solution
((11 + 10) − 5) + 8 = 24
59911Solution
((11 + 9) − 5) + 9 = 24
591010Solution
((10 + 10) − 5) + 9 = 24
6666Solution
((6 + 6) + 6) + 6 = 24
661113Solution
((13 + 11) − 6) + 6 = 24
661212Solution
((12 + 12) − 6) + 6 = 24
671013Solution
((13 + 10) − 6) + 7 = 24
671112Solution
((12 + 11) − 6) + 7 = 24
671213Solution
13 + ((12 + 6) − 7) = 24
68913Solution
((13 + 8) − 6) + 9 = 24
681012Solution
((12 + 10) − 6) + 8 = 24
681111Solution
((11 + 11) − 6) + 8 = 24
681313Solution
13 + ((13 + 6) − 8) = 24
69912Solution
((12 + 9) − 6) + 9 = 24
691011Solution
((11 + 10) − 6) + 9 = 24
6101010Solution
((10 + 10) − 6) + 10 = 24
771113Solution
((13 + 11) − 7) + 7 = 24
771212Solution
((12 + 12) − 7) + 7 = 24
781013Solution
((13 + 10) − 7) + 8 = 24
781112Solution
((12 + 11) − 7) + 8 = 24
781213Solution
13 + ((12 + 7) − 8) = 24
79913Solution
((13 + 9) − 7) + 9 = 24
791012Solution
((12 + 10) − 7) + 9 = 24
791111Solution
((11 + 11) − 7) + 9 = 24
791313Solution
13 + ((13 + 7) − 9) = 24
7101011Solution
((10 + 10) − 7) + 11 = 24
881113Solution
((13 + 11) − 8) + 8 = 24
881212Solution
((12 + 12) − 8) + 8 = 24
891013Solution
((13 + 10) − 8) + 9 = 24
891112Solution
((12 + 11) − 8) + 9 = 24
891213Solution
13 + ((12 + 8) − 9) = 24
8101012Solution
((10 + 10) − 8) + 12 = 24
8101111Solution
((11 + 10) − 8) + 11 = 24
8101313Solution
13 + ((13 + 8) − 10) = 24
991113Solution
((13 + 11) − 9) + 9 = 24
991212Solution
((12 + 12) − 9) + 9 = 24
9101013Solution
13 + ((10 + 10) − 9) = 24
9101112Solution
((11 + 10) − 9) + 12 = 24
9101213Solution
13 + ((12 + 9) − 10) = 24
9111111Solution
((11 + 11) − 9) + 11 = 24
9111313Solution
13 + ((13 + 9) − 11) = 24
10101113Solution
13 + ((11 + 10) − 10) = 24
10101212Solution
((12 + 10) − 10) + 12 = 24
10111112Solution
((11 + 11) − 10) + 12 = 24
10111213Solution
13 + ((12 + 10) − 11) = 24
10121313Solution
13 + ((13 + 10) − 12) = 24
11111113Solution
13 + ((11 + 11) − 11) = 24
11111212Solution
((12 + 11) − 11) + 12 = 24
11121213Solution
13 + ((12 + 11) − 12) = 24
11131313Solution
13 + ((13 + 11) − 13) = 24
12121212Solution
((12 + 12) − 12) + 12 = 24
12121313Solution
13 + ((12 + 12) − 13) = 24
2Obvious factors and cancellation
Sometimes the useful numbers are already there. The job is to make the other cards harmless, often by turning a matching pair into zero or one. Simple exact division and a single preparatory step followed by multiplication also belong here.
Reveal solutionHide solution for level 2
4 × 6 × (9 ÷ 9) = 24
The 4 and 6 do the work; the two 9s make 1.
Browse all 226 problemsHide 226 problems · Level 2
Ordered by the four numbers. Select a hand to reveal one of its easiest solutions. Scroll the list to see every problem in this level.
11112Solution
12 × ((1 + 1) × 1) = 24
1126Solution
6 × ((1 + 1) × 2) = 24
1128Solution
8 × ((2 + 1) × 1) = 24
11211Solution
((11 + 1) × 1) × 2 = 24
11213Solution
((13 − 1) × 1) × 2 = 24
1134Solution
(3 × (1 + 1)) × 4 = 24
1136Solution
6 × ((3 + 1) × 1) = 24
1137Solution
((7 + 1) × 1) × 3 = 24
1139Solution
((9 × 1) − 1) × 3 = 24
11312Solution
12 × ((3 × 1) − 1) = 24
1145Solution
((5 + 1) × 1) × 4 = 24
1147Solution
((7 × 1) − 1) × 4 = 24
1148Solution
8 × ((4 × 1) − 1) = 24
1156Solution
6 × ((5 × 1) − 1) = 24
111013Solution
(13 + (10 + 1)) × 1 = 24
111112Solution
((11 + 1) + 12) × 1 = 24
111213Solution
(13 + (12 − 1)) × 1 = 24
1224Solution
((2 + 1) × 2) × 4 = 24
1225Solution
((5 + 1) × 2) × 2 = 24
1227Solution
((7 − 1) × 2) × 2 = 24
12210Solution
((10 + 2) × 1) × 2 = 24
12212Solution
(12 × (2 − 1)) × 2 = 24
1233Solution
((3 + 1) × 2) × 3 = 24
1235Solution
((5 − 1) × 2) × 3 = 24
1236Solution
(6 + (2 × 1)) × 3 = 24
1238Solution
8 × (3 × (2 − 1)) = 24
1239Solution
(9 + (3 × 1)) × 2 = 24
12310Solution
((10 − 2) × 1) × 3 = 24
1244Solution
(4 + (2 × 1)) × 4 = 24
1246Solution
6 × (4 × (2 − 1)) = 24
1248Solution
(8 + (4 × 1)) × 2 = 24
12412Solution
12 × ((4 × 1) − 2) = 24
1257Solution
(7 + (5 × 1)) × 2 = 24
1258Solution
8 × ((5 × 1) − 2) = 24
1266Solution
((6 × 1) + 6) × 2 = 24
1268Solution
8 × ((6 × 1) ÷ 2) = 24
12913Solution
((13 + 2) + 9) × 1 = 24
121012Solution
((12 + 10) + 2) × 1 = 24
121111Solution
((11 + 11) + 2) × 1 = 24
121113Solution
13 + (11 × (2 − 1)) = 24
121212Solution
(12 × (2 − 1)) + 12 = 24
121313Solution
(13 + (13 − 2)) × 1 = 24
1334Solution
((3 × 1) + 3) × 4 = 24
1335Solution
(5 + (3 × 1)) × 3 = 24
13311Solution
((11 − 3) × 1) × 3 = 24
1344Solution
((4 × 1) + 4) × 3 = 24
1349Solution
((9 × 1) − 3) × 4 = 24
13412Solution
((12 − 4) × 1) × 3 = 24
13512Solution
12 × ((5 × 1) − 3) = 24
13513Solution
((13 − 5) × 1) × 3 = 24
1367Solution
6 × ((7 × 1) − 3) = 24
1368Solution
8 × ((6 × 1) − 3) = 24
13612Solution
6 × ((12 ÷ 3) × 1) = 24
1389Solution
8 × ((9 × 1) ÷ 3) = 24
13813Solution
((13 + 3) + 8) × 1 = 24
13912Solution
((12 + 3) + 9) × 1 = 24
131011Solution
((11 + 10) + 3) × 1 = 24
14410Solution
((10 − 4) × 1) × 4 = 24
14511Solution
((11 − 5) × 1) × 4 = 24
1468Solution
6 × ((8 × 1) − 4) = 24
14612Solution
((12 − 6) × 1) × 4 = 24
1478Solution
8 × ((7 × 1) − 4) = 24
14713Solution
((13 + 4) + 7) × 1 = 24
14812Solution
((12 + 4) + 8) × 1 = 24
14911Solution
((11 + 4) + 9) × 1 = 24
141010Solution
((10 + 10) + 4) × 1 = 24
1569Solution
6 × ((9 × 1) − 5) = 24
15613Solution
((13 + 5) + 6) × 1 = 24
15712Solution
((12 + 5) + 7) × 1 = 24
1588Solution
8 × ((8 × 1) − 5) = 24
15811Solution
((11 + 5) + 8) × 1 = 24
15910Solution
((10 + 5) + 9) × 1 = 24
151012Solution
12 × ((10 ÷ 5) × 1) = 24
16610Solution
6 × ((10 − 6) × 1) = 24
16612Solution
((12 + 6) + 6) × 1 = 24
16711Solution
((11 + 6) + 7) × 1 = 24
16810Solution
((10 + 6) + 8) × 1 = 24
16812Solution
6 × ((12 − 8) × 1) = 24
1699Solution
(9 + (6 × 1)) + 9 = 24
16913Solution
6 × ((13 − 9) × 1) = 24
161212Solution
12 × ((12 ÷ 6) × 1) = 24
17710Solution
((10 + 7) + 7) × 1 = 24
1789Solution
(8 + (7 × 1)) + 9 = 24
17912Solution
12 × ((9 × 1) − 7) = 24
1888Solution
((8 × 1) + 8) + 8 = 24
18811Solution
8 × ((11 − 8) × 1) = 24
18912Solution
8 × ((12 − 9) × 1) = 24
181012Solution
12 × ((10 − 8) × 1) = 24
181013Solution
8 × ((13 − 10) × 1) = 24
191112Solution
12 × ((11 − 9) × 1) = 24
1101212Solution
12 × ((12 − 10) × 1) = 24
1111213Solution
12 × ((13 − 11) × 1) = 24
2224Solution
((4 + 2) × 2) × 2 = 24
2228Solution
((8 − 2) × 2) × 2 = 24
22212Solution
(12 + (2 − 2)) × 2 = 24
2233Solution
((3 + 3) × 2) × 2 = 24
2236Solution
((6 − 2) × 2) × 3 = 24
2238Solution
8 × (3 + (2 − 2)) = 24
2239Solution
((9 − 3) × 2) × 2 = 24
22312Solution
(12 × (3 − 2)) × 2 = 24
2245Solution
((5 − 2) × 2) × 4 = 24
2246Solution
6 × (4 + (2 − 2)) = 24
22410Solution
((10 − 4) × 2) × 2 = 24
22511Solution
((11 − 5) × 2) × 2 = 24
22612Solution
((12 − 6) × 2) × 2 = 24
2337Solution
((7 − 3) × 2) × 3 = 24
2338Solution
8 × (3 × (3 − 2)) = 24
23312Solution
(12 + (3 − 3)) × 2 = 24
2344Solution
(3 × (4 − 2)) × 4 = 24
2346Solution
6 × (4 × (3 − 2)) = 24
2348Solution
((8 − 4) × 2) × 3 = 24
2349Solution
((9 × 2) ÷ 3) × 4 = 24
23412Solution
(12 × (4 − 3)) × 2 = 24
2356Solution
6 × ((5 − 3) × 2) = 24
2359Solution
((9 − 5) × 2) × 3 = 24
2366Solution
6 × ((6 × 2) ÷ 3) = 24
23610Solution
((10 − 6) × 2) × 3 = 24
23711Solution
((11 − 7) × 2) × 3 = 24
23812Solution
((12 − 8) × 2) × 3 = 24
23913Solution
((13 − 9) × 2) × 3 = 24
231113Solution
13 + (11 × (3 − 2)) = 24
231212Solution
(12 × (3 − 2)) + 12 = 24
2447Solution
((7 − 4) × 2) × 4 = 24
24412Solution
(12 + (4 − 4)) × 2 = 24
2458Solution
((8 − 5) × 2) × 4 = 24
24512Solution
(12 × (5 − 4)) × 2 = 24
2466Solution
6 × ((6 − 4) × 2) = 24
2468Solution
8 × ((6 × 2) ÷ 4) = 24
2469Solution
((9 − 6) × 2) × 4 = 24
24710Solution
((10 − 7) × 2) × 4 = 24
24811Solution
((11 − 8) × 2) × 4 = 24
24912Solution
((12 − 9) × 2) × 4 = 24
241013Solution
((13 − 10) × 2) × 4 = 24
2567Solution
6 × ((7 − 5) × 2) = 24
25610Solution
6 × ((10 × 2) ÷ 5) = 24
25612Solution
(12 × (6 − 5)) × 2 = 24
2668Solution
6 × ((8 − 6) × 2) = 24
26612Solution
(12 + (6 − 6)) × 2 = 24
26712Solution
(12 × (7 − 6)) × 2 = 24
2689Solution
8 × ((9 × 2) ÷ 6) = 24
26810Solution
6 × ((10 − 8) × 2) = 24
261012Solution
6 × ((12 − 10) × 2) = 24
261113Solution
6 × ((13 − 11) × 2) = 24
27812Solution
(12 × (8 − 7)) × 2 = 24
28812Solution
(12 + (8 − 8)) × 2 = 24
28912Solution
(12 × (9 − 8)) × 2 = 24
29912Solution
(12 + (9 − 9)) × 2 = 24
291012Solution
(12 × (10 − 9)) × 2 = 24
2101012Solution
(12 + (10 − 10)) × 2 = 24
2101112Solution
(12 × (11 − 10)) × 2 = 24
2111112Solution
(12 + (11 − 11)) × 2 = 24
2111212Solution
(12 × (12 − 11)) × 2 = 24
2121212Solution
(12 + (12 − 12)) × 2 = 24
2121213Solution
(12 × (13 − 12)) × 2 = 24
2121313Solution
(12 + (13 − 13)) × 2 = 24
3338Solution
8 × (3 + (3 − 3)) = 24
3345Solution
(3 × (5 − 3)) × 4 = 24
3346Solution
6 × (4 + (3 − 3)) = 24
3348Solution
8 × (3 × (4 − 3)) = 24
3446Solution
6 × (4 × (4 − 3)) = 24
3448Solution
8 × (3 + (4 − 4)) = 24
3457Solution
(3 × (7 − 5)) × 4 = 24
3458Solution
8 × (3 × (5 − 4)) = 24
34510Solution
(3 × (10 ÷ 5)) × 4 = 24
3468Solution
(3 × (8 − 6)) × 4 = 24
34612Solution
(3 × (12 ÷ 6)) × 4 = 24
3479Solution
(3 × (9 − 7)) × 4 = 24
34810Solution
(3 × (10 − 8)) × 4 = 24
34911Solution
(3 × (11 − 9)) × 4 = 24
341012Solution
(3 × (12 − 10)) × 4 = 24
341113Solution
(3 × (13 − 11)) × 4 = 24
341212Solution
(12 × (4 − 3)) + 12 = 24
3558Solution
8 × (3 + (5 − 5)) = 24
3568Solution
8 × (3 × (6 − 5)) = 24
3668Solution
8 × (3 + (6 − 6)) = 24
3778Solution
8 × (3 + (7 − 7)) = 24
3788Solution
8 × (3 × (8 − 7)) = 24
3888Solution
8 × (3 + (8 − 8)) = 24
3889Solution
8 × (3 × (9 − 8)) = 24
3899Solution
8 × (3 + (9 − 9)) = 24
381010Solution
8 × (3 + (10 − 10)) = 24
381011Solution
8 × (3 × (11 − 10)) = 24
381111Solution
8 × (3 + (11 − 11)) = 24
381112Solution
8 × (3 × (12 − 11)) = 24
381212Solution
8 × (3 + (12 − 12)) = 24
381213Solution
8 × (3 × (13 − 12)) = 24
381313Solution
8 × (3 + (13 − 13)) = 24
4446Solution
6 × (4 + (4 − 4)) = 24
4456Solution
6 × (4 × (5 − 4)) = 24
44812Solution
12 × ((4 × 4) ÷ 8) = 24
4556Solution
6 × (4 + (5 − 5)) = 24
4566Solution
6 × (4 × (6 − 5)) = 24
451012Solution
12 × ((5 × 4) ÷ 10) = 24
451113Solution
13 + (11 × (5 − 4)) = 24
451212Solution
(12 × (5 − 4)) + 12 = 24
4666Solution
6 × (4 + (6 − 6)) = 24
4667Solution
6 × (4 × (7 − 6)) = 24
4678Solution
6 × (4 × (8 − 7)) = 24
4688Solution
6 × (4 + (8 − 8)) = 24
4689Solution
6 × (4 × (9 − 8)) = 24
4699Solution
6 × (4 + (9 − 9)) = 24
46910Solution
6 × (4 × (10 − 9)) = 24
461010Solution
6 × (4 + (10 − 10)) = 24
461011Solution
6 × (4 × (11 − 10)) = 24
461112Solution
6 × (4 × (12 − 11)) = 24
461212Solution
6 × (4 + (12 − 12)) = 24
461213Solution
6 × (4 × (13 − 12)) = 24
48912Solution
8 × (9 ÷ (12 ÷ 4)) = 24
56810Solution
8 × (6 ÷ (10 ÷ 5)) = 24
561113Solution
13 + (11 × (6 − 5)) = 24
561212Solution
(12 × (6 − 5)) + 12 = 24
66812Solution
8 × (6 ÷ (12 ÷ 6)) = 24
671113Solution
13 + (11 × (7 − 6)) = 24
671212Solution
(12 × (7 − 6)) + 12 = 24
781113Solution
13 + (11 × (8 − 7)) = 24
781212Solution
(12 × (8 − 7)) + 12 = 24
891113Solution
13 + (11 × (9 − 8)) = 24
891212Solution
(12 × (9 − 8)) + 12 = 24
9101113Solution
13 + (11 × (10 − 9)) = 24
9101212Solution
(12 × (10 − 9)) + 12 = 24
10111113Solution
13 + (11 × (11 − 10)) = 24
10111212Solution
(12 × (11 − 10)) + 12 = 24
11111213Solution
13 + (11 × (12 − 11)) = 24
11121212Solution
(12 × (12 − 11)) + 12 = 24
11121313Solution
13 + (11 × (13 − 12)) = 24
12121213Solution
(12 × (13 − 12)) + 12 = 24
3Construct familiar factors
Look for 4 × 6, 3 × 8, or 2 × 12. The factors may come from two sums, a sum and a difference, or two differences. Recognizing that last pattern is a useful skill in its own right.
Reveal solutionHide solution for level 3
(11 − 5) × (8 − 4) = 24
Two differences produce 6 and 4. Neither factor appears as a ready-made pair in the hand.
Browse all 582 problemsHide 582 problems · Level 3
Ordered by the four numbers. Select a hand to reveal one of its easiest solutions. Scroll the list to see every problem in this level.
1118Solution
8 × ((1 + 1) + 1) = 24
11111Solution
(11 + 1) × (1 + 1) = 24
11113Solution
(13 − 1) × (1 + 1) = 24
1127Solution
(7 + 1) × (2 + 1) = 24
1129Solution
(9 − 1) × (2 + 1) = 24
11210Solution
(10 + (1 + 1)) × 2 = 24
1135Solution
(5 + 1) × (3 + 1) = 24
11310Solution
(10 − (1 + 1)) × 3 = 24
11311Solution
(11 + 1) × (3 − 1) = 24
11313Solution
(13 − 1) × (3 − 1) = 24
1144Solution
(4 + (1 + 1)) × 4 = 24
1149Solution
(9 − 1) × (4 − 1) = 24
11412Solution
12 × (4 − (1 + 1)) = 24
1155Solution
(5 + 1) × (5 − 1) = 24
1157Solution
(7 + 5) × (1 + 1) = 24
1158Solution
8 × (5 − (1 + 1)) = 24
1166Solution
(6 + 6) × (1 + 1) = 24
1168Solution
8 × (6 ÷ (1 + 1)) = 24
1228Solution
8 × ((2 + 2) − 1) = 24
1229Solution
(9 + (2 + 1)) × 2 = 24
12211Solution
((11 + 2) − 1) × 2 = 24
12213Solution
((13 + 1) − 2) × 2 = 24
1237Solution
((7 + 2) − 1) × 3 = 24
12311Solution
(11 − 3) × (2 + 1) = 24
12312Solution
12 × ((3 + 1) − 2) = 24
1245Solution
((5 + 2) − 1) × 4 = 24
1247Solution
(7 + (4 + 1)) × 2 = 24
1249Solution
((9 + 4) − 1) × 2 = 24
12410Solution
(10 − 2) × (4 − 1) = 24
12411Solution
(11 + 1) × (4 − 2) = 24
12413Solution
(13 − 1) × (4 − 2) = 24
1256Solution
((5 + 1) + 6) × 2 = 24
1259Solution
(9 − 1) × (5 − 2) = 24
12512Solution
12 × (5 − (2 + 1)) = 24
12513Solution
(13 − 5) × (2 + 1) = 24
1267Solution
((7 + 6) − 1) × 2 = 24
1269Solution
6 × ((9 − 1) ÷ 2) = 24
12610Solution
6 × ((10 ÷ 2) − 1) = 24
12612Solution
6 × (12 ÷ (2 + 1)) = 24
1278Solution
8 × ((7 − 1) ÷ 2) = 24
1288Solution
8 × ((8 ÷ 2) − 1) = 24
1289Solution
8 × (9 ÷ (2 + 1)) = 24
1333Solution
(3 + 3) × (3 + 1) = 24
1336Solution
((6 + 3) − 1) × 3 = 24
1339Solution
(9 − 3) × (3 + 1) = 24
13310Solution
((10 + 1) − 3) × 3 = 24
13312Solution
(12 − (3 + 1)) × 3 = 24
1345Solution
((5 + 4) − 1) × 3 = 24
1348Solution
((8 + 1) − 3) × 4 = 24
13410Solution
(10 − 4) × (3 + 1) = 24
13411Solution
((11 + 1) − 4) × 3 = 24
13413Solution
(13 − (4 + 1)) × 3 = 24
1357Solution
(5 + 1) × (7 − 3) = 24
1358Solution
8 × ((5 + 1) − 3) = 24
1359Solution
(9 − 3) × (5 − 1) = 24
13511Solution
(11 + 1) × (5 − 3) = 24
1366Solution
6 × ((6 + 1) − 3) = 24
1369Solution
(9 − 1) × (6 − 3) = 24
13611Solution
6 × ((11 + 1) ÷ 3) = 24
13613Solution
((13 + 1) − 6) × 3 = 24
1377Solution
(7 − 1) × (7 − 3) = 24
1378Solution
8 × (7 − (3 + 1)) = 24
1379Solution
(7 + 1) × (9 ÷ 3) = 24
13712Solution
12 × ((7 − 1) ÷ 3) = 24
1388Solution
8 × ((8 + 1) ÷ 3) = 24
13810Solution
8 × ((10 − 1) ÷ 3) = 24
1399Solution
(9 − 1) × (9 ÷ 3) = 24
1444Solution
(4 + 4) × (4 − 1) = 24
1449Solution
((9 + 1) − 4) × 4 = 24
14411Solution
(11 − (4 + 1)) × 4 = 24
14412Solution
(12 − 4) × (4 − 1) = 24
1458Solution
(5 + 1) × (8 − 4) = 24
14510Solution
((10 + 1) − 5) × 4 = 24
14512Solution
12 × ((5 + 1) − 4) = 24
14513Solution
(13 − 5) × (4 − 1) = 24
1467Solution
6 × ((7 + 1) − 4) = 24
1469Solution
6 × (9 − (4 + 1)) = 24
14611Solution
((11 + 1) − 6) × 4 = 24
1477Solution
(7 + 1) × (7 − 4) = 24
1479Solution
(9 − 1) × (7 − 4) = 24
1488Solution
8 × (8 − (4 + 1)) = 24
1489Solution
8 × (9 ÷ (4 − 1)) = 24
141012Solution
12 × (10 ÷ (4 + 1)) = 24
141212Solution
12 × ((12 ÷ 4) − 1) = 24
1559Solution
(5 + 1) × (9 − 5) = 24
15511Solution
(11 − 5) × (5 − 1) = 24
15512Solution
12 × ((5 ÷ 5) + 1) = 24
1568Solution
6 × ((8 + 1) − 5) = 24
15610Solution
(5 + 1) × (10 − 6) = 24
1578Solution
8 × ((7 + 1) − 5) = 24
1579Solution
(7 − 1) × (9 − 5) = 24
1589Solution
8 × (9 − (5 + 1)) = 24
15912Solution
12 × ((9 + 1) ÷ 5) = 24
15913Solution
(5 + 1) × (13 − 9) = 24
151011Solution
(11 + 1) × (10 ÷ 5) = 24
151013Solution
(13 − 1) × (10 ÷ 5) = 24
151112Solution
12 × ((11 − 1) ÷ 5) = 24
151212Solution
12 × (12 ÷ (5 + 1)) = 24
1669Solution
6 × ((9 + 1) − 6) = 24
1679Solution
(7 + 1) × (9 − 6) = 24
1688Solution
8 × ((8 + 1) − 6) = 24
16813Solution
6 × (13 − (8 + 1)) = 24
16912Solution
6 × ((12 + 1) − 9) = 24
161012Solution
12 × (10 ÷ (6 − 1)) = 24
161013Solution
6 × ((13 + 1) − 10) = 24
161112Solution
12 × ((11 + 1) ÷ 6) = 24
161213Solution
12 × ((13 − 1) ÷ 6) = 24
17712Solution
12 × ((7 ÷ 7) + 1) = 24
17811Solution
(7 + 1) × (11 − 8) = 24
17812Solution
12 × ((8 + 1) − 7) = 24
17910Solution
(9 − 1) × (10 − 7) = 24
17911Solution
(11 + 1) × (9 − 7) = 24
17913Solution
(13 − 1) × (9 − 7) = 24
171012Solution
12 × (10 − (7 + 1)) = 24
171013Solution
(7 + 1) × (13 − 10) = 24
171212Solution
12 × (12 ÷ (7 − 1)) = 24
171213Solution
12 × ((13 + 1) ÷ 7) = 24
18810Solution
8 × ((10 + 1) − 8) = 24
18812Solution
8 × (12 − (8 + 1)) = 24
18911Solution
8 × ((11 + 1) − 9) = 24
18913Solution
8 × (13 − (9 + 1)) = 24
181011Solution
(11 + 1) × (10 − 8) = 24
181112Solution
12 × (11 − (8 + 1)) = 24
181113Solution
8 × ((13 + 1) − 11) = 24
19912Solution
(9 − 1) × (12 − 9) = 24
191012Solution
12 × ((10 + 1) − 9) = 24
191013Solution
(9 − 1) × (13 − 10) = 24
191111Solution
(11 + 1) × (11 − 9) = 24
191113Solution
(13 − 1) × (11 − 9) = 24
191212Solution
12 × (12 − (9 + 1)) = 24
1101012Solution
12 × ((10 ÷ 10) + 1) = 24
1101112Solution
12 × ((11 + 1) − 10) = 24
1101213Solution
12 × (13 − (10 + 1)) = 24
1111112Solution
12 × ((11 ÷ 11) + 1) = 24
1111113Solution
(11 + 1) × (13 − 11) = 24
1111212Solution
12 × ((12 + 1) − 11) = 24
1111313Solution
(13 − 1) × (13 − 11) = 24
1121212Solution
12 × ((12 ÷ 12) + 1) = 24
1121213Solution
12 × ((13 + 1) − 12) = 24
1121313Solution
12 × ((13 ÷ 13) + 1) = 24
2225Solution
((5 × 2) + 2) × 2 = 24
2227Solution
((7 × 2) − 2) × 2 = 24
22211Solution
(11 + (2 ÷ 2)) × 2 = 24
22213Solution
(13 − (2 ÷ 2)) × 2 = 24
2234Solution
((2 + 2) + 4) × 3 = 24
2235Solution
((5 × 2) − 2) × 3 = 24
2237Solution
(7 + (3 + 2)) × 2 = 24
22311Solution
((11 + 3) − 2) × 2 = 24
22313Solution
((13 + 2) − 3) × 2 = 24
2244Solution
((4 × 2) + 4) × 2 = 24
2247Solution
(7 − (2 ÷ 2)) × 4 = 24
2248Solution
((8 × 2) − 4) × 2 = 24
2255Solution
((5 + 2) + 5) × 2 = 24
2256Solution
(6 + 2) × (5 − 2) = 24
2259Solution
((9 + 5) − 2) × 2 = 24
22510Solution
(10 − 2) × (5 − 2) = 24
2266Solution
6 × ((6 + 2) ÷ 2) = 24
2268Solution
((8 + 6) − 2) × 2 = 24
2269Solution
((9 × 2) − 6) × 2 = 24
22610Solution
6 × ((10 − 2) ÷ 2) = 24
2277Solution
((7 + 7) − 2) × 2 = 24
2278Solution
8 × (7 − (2 + 2)) = 24
22710Solution
(7 + (10 ÷ 2)) × 2 = 24
2288Solution
(8 + (8 ÷ 2)) × 2 = 24
22810Solution
((10 × 2) − 8) × 2 = 24
221011Solution
((11 × 2) − 10) × 2 = 24
2333Solution
((3 + 2) + 3) × 3 = 24
2335Solution
((5 × 3) − 3) × 2 = 24
2336Solution
((3 + 3) + 6) × 2 = 24
2339Solution
((9 + 2) − 3) × 3 = 24
23310Solution
((10 ÷ 2) + 3) × 3 = 24
23311Solution
(11 + (3 ÷ 3)) × 2 = 24
23313Solution
(13 − (3 + 2)) × 3 = 24
2345Solution
((4 + 3) + 5) × 2 = 24
2347Solution
((7 + 2) − 3) × 4 = 24
23410Solution
((10 + 2) − 4) × 3 = 24
23411Solution
((11 + 4) − 3) × 2 = 24
23413Solution
((13 + 3) − 4) × 2 = 24
2355Solution
((5 + 5) − 2) × 3 = 24
23510Solution
((10 + 5) − 3) × 2 = 24
23511Solution
((11 + 2) − 5) × 3 = 24
2367Solution
((7 × 2) − 6) × 3 = 24
2369Solution
((9 + 6) − 3) × 2 = 24
23611Solution
6 × ((11 − 3) ÷ 2) = 24
23612Solution
((12 + 2) − 6) × 3 = 24
2378Solution
((8 + 7) − 3) × 2 = 24
2379Solution
((7 × 3) − 9) × 2 = 24
23713Solution
((13 + 2) − 7) × 3 = 24
2388Solution
((8 × 2) − 8) × 3 = 24
2389Solution
8 × (9 − (3 × 2)) = 24
2399Solution
(9 + (9 ÷ 3)) × 2 = 24
231012Solution
((10 × 2) − 12) × 3 = 24
2444Solution
((4 + 4) + 4) × 2 = 24
2445Solution
((5 × 2) − 4) × 4 = 24
2446Solution
6 × ((4 × 2) − 4) = 24
2448Solution
((8 + 2) − 4) × 4 = 24
24411Solution
(11 + (4 ÷ 4)) × 2 = 24
24413Solution
(13 − (4 ÷ 4)) × 2 = 24
2457Solution
(7 + 5) × (4 − 2) = 24
2459Solution
((9 + 2) − 5) × 4 = 24
24511Solution
((11 + 5) − 4) × 2 = 24
2467Solution
(6 + 2) × (7 − 4) = 24
24610Solution
((10 + 2) − 6) × 4 = 24
2478Solution
((7 × 2) − 8) × 4 = 24
2479Solution
((9 + 7) − 4) × 2 = 24
2488Solution
((8 + 8) − 4) × 2 = 24
2489Solution
8 × (9 − (4 + 2)) = 24
24812Solution
((12 + 2) − 8) × 4 = 24
241011Solution
(11 − (10 ÷ 2)) × 4 = 24
241212Solution
12 × (12 ÷ (4 + 2)) = 24
2558Solution
8 × (2 + (5 ÷ 5)) = 24
25511Solution
(11 + (5 ÷ 5)) × 2 = 24
25513Solution
(13 − 5) × (5 − 2) = 24
2566Solution
6 × ((5 × 2) − 6) = 24
2568Solution
8 × ((6 + 2) − 5) = 24
25613Solution
((13 + 5) − 6) × 2 = 24
2578Solution
8 × ((5 × 2) − 7) = 24
25810Solution
8 × (10 − (5 + 2)) = 24
25811Solution
8 × ((11 − 5) ÷ 2) = 24
25812Solution
12 × ((5 × 2) − 8) = 24
251010Solution
(10 + (10 ÷ 5)) × 2 = 24
251212Solution
12 × (12 − (5 × 2)) = 24
2667Solution
6 × (7 − (6 ÷ 2)) = 24
2669Solution
(6 + 2) × (9 − 6) = 24
26611Solution
(11 + (6 ÷ 6)) × 2 = 24
26613Solution
(13 − (6 ÷ 6)) × 2 = 24
2678Solution
8 × ((7 + 2) − 6) = 24
26710Solution
6 × ((7 × 2) − 10) = 24
26711Solution
((11 + 7) − 6) × 2 = 24
26811Solution
8 × (11 − (6 + 2)) = 24
2699Solution
((9 + 9) − 6) × 2 = 24
26910Solution
(10 − 2) × (9 − 6) = 24
26912Solution
(6 + 2) × (12 − 9) = 24
261013Solution
(6 + 2) × (13 − 10) = 24
27711Solution
(11 + (7 ÷ 7)) × 2 = 24
27713Solution
(13 − (7 ÷ 7)) × 2 = 24
2788Solution
8 × ((8 + 2) − 7) = 24
27813Solution
((13 + 7) − 8) × 2 = 24
271010Solution
(10 − 2) × (10 − 7) = 24
271012Solution
12 × (10 ÷ (7 − 2)) = 24
271112Solution
12 × (11 − (7 + 2)) = 24
271212Solution
12 × ((7 × 2) − 12) = 24
2888Solution
8 × (2 + (8 ÷ 8)) = 24
2889Solution
8 × ((9 + 2) − 8) = 24
28811Solution
(11 + (8 ÷ 8)) × 2 = 24
28813Solution
8 × ((8 × 2) − 13) = 24
28910Solution
8 × ((10 + 2) − 9) = 24
28911Solution
((11 + 9) − 8) × 2 = 24
28913Solution
((13 + 8) − 9) × 2 = 24
281010Solution
((10 + 10) − 8) × 2 = 24
281011Solution
8 × ((11 + 2) − 10) = 24
281111Solution
8 × (2 + (11 ÷ 11)) = 24
281112Solution
8 × ((12 + 2) − 11) = 24
281212Solution
12 × (12 − (8 + 2)) = 24
281213Solution
8 × ((13 + 2) − 12) = 24
281313Solution
8 × (2 + (13 ÷ 13)) = 24
29911Solution
(11 + (9 ÷ 9)) × 2 = 24
29913Solution
(13 − (9 ÷ 9)) × 2 = 24
291011Solution
((11 + 10) − 9) × 2 = 24
291013Solution
((13 + 9) − 10) × 2 = 24
291213Solution
12 × (13 − (9 + 2)) = 24
2101011Solution
(11 + (10 ÷ 10)) × 2 = 24
2101013Solution
(10 − 2) × (13 − 10) = 24
2101111Solution
((11 + 11) − 10) × 2 = 24
2101113Solution
((13 + 10) − 11) × 2 = 24
2111111Solution
(11 + (11 ÷ 11)) × 2 = 24
2111113Solution
(13 − (11 ÷ 11)) × 2 = 24
2111213Solution
((13 + 11) − 12) × 2 = 24
2111313Solution
(11 + (13 ÷ 13)) × 2 = 24
2131313Solution
(13 − (13 ÷ 13)) × 2 = 24
3334Solution
((3 × 3) − 3) × 4 = 24
3336Solution
6 × (3 + (3 ÷ 3)) = 24
3337Solution
(3 + 3) × (7 − 3) = 24
3339Solution
(9 − (3 ÷ 3)) × 3 = 24
33312Solution
12 × ((3 + 3) ÷ 3) = 24
3344Solution
((4 × 3) − 4) × 3 = 24
3347Solution
((7 + 4) − 3) × 3 = 24
3349Solution
((9 + 3) − 4) × 3 = 24
33412Solution
12 × ((3 + 3) − 4) = 24
3356Solution
6 × ((3 × 3) − 5) = 24
3357Solution
((5 × 3) − 7) × 3 = 24
3359Solution
(3 + 3) × (9 − 5) = 24
33510Solution
((10 + 3) − 5) × 3 = 24
3366Solution
(6 + (6 ÷ 3)) × 3 = 24
3368Solution
8 × ((3 × 3) − 6) = 24
3369Solution
6 × ((9 + 3) ÷ 3) = 24
33610Solution
((6 × 3) − 10) × 3 = 24
33611Solution
((11 + 3) − 6) × 3 = 24
33613Solution
6 × (13 − (3 × 3)) = 24
3379Solution
(9 − 3) × (7 − 3) = 24
33712Solution
((12 + 3) − 7) × 3 = 24
33713Solution
((7 × 3) − 13) × 3 = 24
3389Solution
8 × (9 − (3 + 3)) = 24
33812Solution
8 × (12 − (3 × 3)) = 24
33813Solution
((13 + 3) − 8) × 3 = 24
33911Solution
(11 − (9 ÷ 3)) × 3 = 24
33912Solution
12 × ((9 − 3) ÷ 3) = 24
33913Solution
(3 + 3) × (13 − 9) = 24
331112Solution
12 × (11 − (3 × 3)) = 24
3445Solution
((5 + 4) − 3) × 4 = 24
3447Solution
((7 + 3) − 4) × 4 = 24
3449Solution
(4 + 4) × (9 ÷ 3) = 24
34412Solution
((12 ÷ 4) + 3) × 4 = 24
3456Solution
6 × ((5 + 3) − 4) = 24
3459Solution
((5 × 3) − 9) × 4 = 24
34513Solution
((13 + 5) ÷ 3) × 4 = 24
3466Solution
((6 + 6) − 4) × 3 = 24
3469Solution
((9 + 3) − 6) × 4 = 24
34610Solution
((10 + 4) − 6) × 3 = 24
34613Solution
6 × ((13 + 3) ÷ 4) = 24
34711Solution
((11 + 4) − 7) × 3 = 24
34811Solution
((11 + 3) − 8) × 4 = 24
34812Solution
((12 + 4) − 8) × 3 = 24
34813Solution
8 × ((13 − 4) ÷ 3) = 24
3499Solution
((9 + 9) ÷ 3) × 4 = 24
34912Solution
((12 + 3) − 9) × 4 = 24
34913Solution
((13 + 4) − 9) × 3 = 24
3556Solution
6 × (3 + (5 ÷ 5)) = 24
3557Solution
(7 + 5) × (5 − 3) = 24
3559Solution
(9 − (5 ÷ 5)) × 3 = 24
35512Solution
12 × (3 − (5 ÷ 5)) = 24
3566Solution
6 × ((6 + 3) − 5) = 24
3567Solution
((7 + 6) − 5) × 3 = 24
3569Solution
((9 + 5) − 6) × 3 = 24
35611Solution
6 × ((5 × 3) − 11) = 24
35612Solution
12 × ((5 + 3) − 6) = 24
35613Solution
(13 − 5) × (6 − 3) = 24
35710Solution
((10 + 5) − 7) × 3 = 24
35711Solution
(11 − 5) × (7 − 3) = 24
35712Solution
12 × ((7 + 3) ÷ 5) = 24
35811Solution
((11 + 5) − 8) × 3 = 24
35812Solution
8 × ((5 × 3) − 12) = 24
3599Solution
(9 − 3) × (9 − 5) = 24
35910Solution
(9 + 3) × (10 ÷ 5) = 24
35912Solution
((12 + 5) − 9) × 3 = 24
351010Solution
(10 − (10 ÷ 5)) × 3 = 24
351013Solution
((13 + 5) − 10) × 3 = 24
351112Solution
12 × ((11 − 5) ÷ 3) = 24
351213Solution
12 × ((5 × 3) − 13) = 24
3666Solution
6 × ((6 + 6) ÷ 3) = 24
3667Solution
6 × ((7 + 3) − 6) = 24
36612Solution
(6 + (12 ÷ 6)) × 3 = 24
36613Solution
6 × (13 − (6 + 3)) = 24
3677Solution
((7 + 7) − 6) × 3 = 24
3679Solution
((9 + 6) − 7) × 3 = 24
36712Solution
12 × ((6 + 3) − 7) = 24
3688Solution
6 × (3 + (8 ÷ 8)) = 24
3689Solution
6 × ((9 + 3) − 8) = 24
36810Solution
((10 + 6) − 8) × 3 = 24
36812Solution
8 × (12 − (6 + 3)) = 24
3699Solution
6 × (3 + (9 ÷ 9)) = 24
36910Solution
6 × ((10 + 3) − 9) = 24
36911Solution
((11 + 6) − 9) × 3 = 24
361010Solution
6 × (3 + (10 ÷ 10)) = 24
361012Solution
((12 + 6) − 10) × 3 = 24
361111Solution
6 × (3 + (11 ÷ 11)) = 24
361112Solution
6 × ((12 + 3) − 11) = 24
361113Solution
((13 + 6) − 11) × 3 = 24
361212Solution
6 × (3 + (12 ÷ 12)) = 24
361213Solution
6 × ((13 + 3) − 12) = 24
361313Solution
6 × (3 + (13 ÷ 13)) = 24
3779Solution
(9 − (7 ÷ 7)) × 3 = 24
37712Solution
12 × (3 − (7 ÷ 7)) = 24
3789Solution
((9 + 7) − 8) × 3 = 24
37813Solution
8 × (13 − (7 + 3)) = 24
3799Solution
(9 + 3) × (9 − 7) = 24
37910Solution
((10 + 7) − 9) × 3 = 24
371011Solution
((11 + 7) − 10) × 3 = 24
371111Solution
(7 + (11 ÷ 11)) × 3 = 24
371112Solution
((12 + 7) − 11) × 3 = 24
371212Solution
12 × (12 − (7 + 3)) = 24
371213Solution
((13 + 7) − 12) × 3 = 24
371313Solution
(7 + (13 ÷ 13)) × 3 = 24
38812Solution
12 × (3 − (8 ÷ 8)) = 24
38912Solution
12 × ((8 + 3) − 9) = 24
381012Solution
12 × (10 ÷ (8 − 3)) = 24
39910Solution
((9 + 9) − 10) × 3 = 24
39911Solution
(9 + 3) × (11 − 9) = 24
39912Solution
12 × (3 − (9 ÷ 9)) = 24
39913Solution
(9 − 3) × (13 − 9) = 24
391010Solution
(9 − (10 ÷ 10)) × 3 = 24
391011Solution
((10 + 9) − 11) × 3 = 24
391012Solution
12 × ((9 + 3) − 10) = 24
391111Solution
(9 − (11 ÷ 11)) × 3 = 24
391112Solution
((11 + 9) − 12) × 3 = 24
391113Solution
(9 + 3) × (13 − 11) = 24
391212Solution
12 × (12 ÷ (9 − 3)) = 24
391213Solution
((12 + 9) − 13) × 3 = 24
391313Solution
(9 − (13 ÷ 13)) × 3 = 24
3101012Solution
((10 + 10) − 12) × 3 = 24
3101112Solution
12 × ((10 + 3) − 11) = 24
3101113Solution
((11 + 10) − 13) × 3 = 24
3111112Solution
12 × (3 − (11 ÷ 11)) = 24
3111212Solution
12 × ((11 + 3) − 12) = 24
3121212Solution
12 × (3 − (12 ÷ 12)) = 24
3121213Solution
12 × ((12 + 3) − 13) = 24
3121313Solution
12 × (3 − (13 ÷ 13)) = 24
4445Solution
(5 + (4 ÷ 4)) × 4 = 24
4447Solution
(4 + 4) × (7 − 4) = 24
4448Solution
(4 + (8 ÷ 4)) × 4 = 24
44410Solution
((4 × 4) − 10) × 4 = 24
4455Solution
((5 + 5) − 4) × 4 = 24
4457Solution
((7 + 4) − 5) × 4 = 24
4458Solution
8 × ((4 + 4) − 5) = 24
44510Solution
(4 + (10 ÷ 5)) × 4 = 24
4468Solution
((8 + 4) − 6) × 4 = 24
4469Solution
(4 + 4) × (9 − 6) = 24
44612Solution
12 × ((4 + 4) − 6) = 24
44710Solution
(4 + 4) × (10 − 7) = 24
44712Solution
(12 − 4) × (7 − 4) = 24
44810Solution
((10 + 4) − 8) × 4 = 24
44811Solution
8 × (11 − (4 + 4)) = 24
44813Solution
8 × ((4 × 4) − 13) = 24
44911Solution
((11 + 4) − 9) × 4 = 24
44912Solution
(4 + 4) × (12 − 9) = 24
441012Solution
((12 + 4) − 10) × 4 = 24
441013Solution
(4 + 4) × (13 − 10) = 24
4555Solution
(5 + (5 ÷ 5)) × 4 = 24
4557Solution
(7 − (5 ÷ 5)) × 4 = 24
4558Solution
8 × (4 − (5 ÷ 5)) = 24
4567Solution
((7 + 5) − 6) × 4 = 24
4568Solution
8 × ((5 + 4) − 6) = 24
45611Solution
6 × ((11 + 5) ÷ 4) = 24
45612Solution
12 × ((6 + 4) ÷ 5) = 24
45613Solution
6 × (13 − (5 + 4)) = 24
4577Solution
(5 + (7 ÷ 7)) × 4 = 24
45712Solution
12 × ((5 + 4) − 7) = 24
45713Solution
(13 − 5) × (7 − 4) = 24
4588Solution
(5 + (8 ÷ 8)) × 4 = 24
4589Solution
((9 + 5) − 8) × 4 = 24
45810Solution
(8 + 4) × (10 ÷ 5) = 24
45811Solution
(11 − 5) × (8 − 4) = 24
45812Solution
8 × (12 − (5 + 4)) = 24
4599Solution
(5 + (9 ÷ 9)) × 4 = 24
45910Solution
((10 + 5) − 9) × 4 = 24
451010Solution
(5 + (10 ÷ 10)) × 4 = 24
451011Solution
((11 + 5) − 10) × 4 = 24
451111Solution
(5 + (11 ÷ 11)) × 4 = 24
451313Solution
(5 + (13 ÷ 13)) × 4 = 24
46610Solution
6 × ((10 + 6) ÷ 4) = 24
4679Solution
6 × ((9 + 7) ÷ 4) = 24
46712Solution
6 × (12 ÷ (7 − 4)) = 24
46812Solution
12 × ((6 + 4) − 8) = 24
46813Solution
8 × (13 − (6 + 4)) = 24
46912Solution
(12 − 4) × (9 − 6) = 24
4777Solution
(7 − (7 ÷ 7)) × 4 = 24
4778Solution
((7 + 7) − 8) × 4 = 24
4788Solution
8 × ((7 + 4) − 8) = 24
4789Solution
((8 + 7) − 9) × 4 = 24
4799Solution
(7 − (9 ÷ 9)) × 4 = 24
47910Solution
((9 + 7) − 10) × 4 = 24
471010Solution
(7 − (10 ÷ 10)) × 4 = 24
471012Solution
(12 − 4) × (10 − 7) = 24
471111Solution
(7 − (11 ÷ 11)) × 4 = 24
471112Solution
((11 + 7) − 12) × 4 = 24
471212Solution
(7 − (12 ÷ 12)) × 4 = 24
471213Solution
((12 + 7) − 13) × 4 = 24
471313Solution
(7 − (13 ÷ 13)) × 4 = 24
4888Solution
8 × (4 − (8 ÷ 8)) = 24
4889Solution
8 × ((8 + 4) − 9) = 24
48810Solution
((8 + 8) − 10) × 4 = 24
4899Solution
8 × (4 − (9 ÷ 9)) = 24
48910Solution
8 × ((9 + 4) − 10) = 24
481011Solution
8 × ((10 + 4) − 11) = 24
481012Solution
((10 + 8) − 12) × 4 = 24
481111Solution
8 × (4 − (11 ÷ 11)) = 24
481112Solution
8 × ((11 + 4) − 12) = 24
481113Solution
((11 + 8) − 13) × 4 = 24
481212Solution
12 × ((12 + 4) ÷ 8) = 24
481213Solution
8 × ((12 + 4) − 13) = 24
481313Solution
8 × (4 − (13 ÷ 13)) = 24
49912Solution
((9 + 9) − 12) × 4 = 24
491012Solution
12 × (10 ÷ (9 − 4)) = 24
491013Solution
((10 + 9) − 13) × 4 = 24
491112Solution
12 × ((9 + 4) − 11) = 24
491212Solution
(12 − 4) × (12 − 9) = 24
4101212Solution
12 × ((10 + 4) − 12) = 24
4101213Solution
(12 − 4) × (13 − 10) = 24
4111213Solution
12 × ((11 + 4) − 13) = 24
5556Solution
6 × (5 − (5 ÷ 5)) = 24
55512Solution
12 × ((5 + 5) ÷ 5) = 24
5566Solution
6 × ((5 + 5) − 6) = 24
5578Solution
8 × ((5 + 5) − 7) = 24
55710Solution
(7 + 5) × (10 ÷ 5) = 24
55810Solution
8 × ((10 + 5) ÷ 5) = 24
55812Solution
12 × ((5 + 5) − 8) = 24
55813Solution
8 × (13 − (5 + 5)) = 24
55911Solution
(11 − 5) × (9 − 5) = 24
5666Solution
6 × (5 − (6 ÷ 6)) = 24
56610Solution
(6 + 6) × (10 ÷ 5) = 24
5677Solution
6 × (5 − (7 ÷ 7)) = 24
5678Solution
6 × ((7 + 5) − 8) = 24
56712Solution
12 × ((7 + 5) ÷ 6) = 24
56713Solution
6 × ((13 + 7) ÷ 5) = 24
5688Solution
8 × ((6 + 5) − 8) = 24
5689Solution
6 × ((8 + 5) − 9) = 24
56812Solution
6 × ((12 + 8) ÷ 5) = 24
56813Solution
8 × ((13 + 5) ÷ 6) = 24
5699Solution
6 × (5 − (9 ÷ 9)) = 24
56910Solution
6 × ((9 + 5) − 10) = 24
56911Solution
6 × ((11 + 9) ÷ 5) = 24
56912Solution
12 × ((6 + 5) − 9) = 24
56913Solution
(13 − 5) × (9 − 6) = 24
561010Solution
6 × ((10 + 10) ÷ 5) = 24
561011Solution
6 × ((10 + 5) − 11) = 24
561111Solution
6 × (5 − (11 ÷ 11)) = 24
561313Solution
6 × (5 − (13 ÷ 13)) = 24
5779Solution
(7 + 5) × (9 − 7) = 24
5788Solution
8 × ((8 + 7) ÷ 5) = 24
5789Solution
8 × ((7 + 5) − 9) = 24
57810Solution
(7 + 5) × (10 − 8) = 24
57911Solution
(7 + 5) × (11 − 9) = 24
57912Solution
12 × ((9 + 5) ÷ 7) = 24
571013Solution
(13 − 5) × (10 − 7) = 24
571113Solution
(7 + 5) × (13 − 11) = 24
5889Solution
8 × (9 ÷ (8 − 5)) = 24
58810Solution
8 × ((8 + 5) − 10) = 24
58911Solution
8 × ((9 + 5) − 11) = 24
581012Solution
8 × ((10 + 5) − 12) = 24
581112Solution
12 × ((8 + 5) − 11) = 24
581113Solution
8 × ((11 + 5) − 13) = 24
591113Solution
(11 − 5) × (13 − 9) = 24
591212Solution
12 × ((9 + 5) − 12) = 24
591213Solution
(13 − 5) × (12 − 9) = 24
5101012Solution
12 × (10 ÷ (10 − 5)) = 24
5101213Solution
12 × ((10 + 5) − 13) = 24
5101313Solution
(13 − 5) × (13 − 10) = 24
5111212Solution
12 × (12 ÷ (11 − 5)) = 24
6668Solution
6 × ((6 + 6) − 8) = 24
66612Solution
12 × ((6 + 6) ÷ 6) = 24
6679Solution
6 × ((7 + 6) − 9) = 24
6688Solution
8 × (6 ÷ (8 − 6)) = 24
6689Solution
8 × ((6 + 6) − 9) = 24
66810Solution
6 × ((8 + 6) − 10) = 24
66911Solution
6 × ((9 + 6) − 11) = 24
66912Solution
6 × (12 ÷ (9 − 6)) = 24
661012Solution
6 × ((10 + 6) − 12) = 24
67710Solution
6 × ((7 + 7) − 10) = 24
6789Solution
8 × (6 ÷ (9 − 7)) = 24
67810Solution
8 × ((7 + 6) − 10) = 24
67811Solution
6 × ((8 + 7) − 11) = 24
67812Solution
12 × ((8 + 6) ÷ 7) = 24
67912Solution
6 × ((9 + 7) − 12) = 24
671012Solution
6 × (12 ÷ (10 − 7)) = 24
68810Solution
8 × ((10 + 8) ÷ 6) = 24
68811Solution
8 × ((8 + 6) − 11) = 24
68812Solution
6 × ((8 + 8) − 12) = 24
6899Solution
8 × ((9 + 9) ÷ 6) = 24
68911Solution
8 × (6 ÷ (11 − 9)) = 24
68912Solution
8 × ((9 + 6) − 12) = 24
681013Solution
8 × ((10 + 6) − 13) = 24
681112Solution
6 × (12 ÷ (11 − 8)) = 24
681113Solution
8 × (6 ÷ (13 − 11)) = 24
681212Solution
12 × ((8 + 6) − 12) = 24
691212Solution
12 × ((12 + 6) ÷ 9) = 24
691213Solution
12 × ((9 + 6) − 13) = 24
6101112Solution
12 × (10 ÷ (11 − 6)) = 24
6101213Solution
6 × (12 ÷ (13 − 10)) = 24
6121212Solution
12 × (12 ÷ (12 − 6)) = 24
77712Solution
12 × ((7 + 7) ÷ 7) = 24
77811Solution
8 × ((7 + 7) − 11) = 24
78812Solution
8 × ((8 + 7) − 12) = 24
78813Solution
8 × ((13 + 8) ÷ 7) = 24
78910Solution
8 × (9 ÷ (10 − 7)) = 24
78912Solution
8 × ((12 + 9) ÷ 7) = 24
78913Solution
8 × ((9 + 7) − 13) = 24
781011Solution
8 × ((11 + 10) ÷ 7) = 24
791112Solution
12 × ((11 + 7) ÷ 9) = 24
7101212Solution
12 × (10 ÷ (12 − 7)) = 24
7101213Solution
12 × ((13 + 7) ÷ 10) = 24
7121213Solution
12 × (12 ÷ (13 − 7)) = 24
88812Solution
12 × ((8 + 8) ÷ 8) = 24
88813Solution
8 × ((8 + 8) − 13) = 24
88911Solution
8 × (9 ÷ (11 − 8)) = 24
89912Solution
8 × (9 ÷ (12 − 9)) = 24
891012Solution
12 × ((10 + 8) ÷ 9) = 24
8101212Solution
12 × ((12 + 8) ÷ 10) = 24
8101213Solution
12 × (10 ÷ (13 − 8)) = 24
99912Solution
12 × ((9 + 9) ÷ 9) = 24
9111213Solution
12 × ((13 + 9) ÷ 11) = 24
10101012Solution
12 × ((10 + 10) ÷ 10) = 24
11111112Solution
12 × ((11 + 11) ÷ 11) = 24
4Nearby totals and small corrections
If 24 is awkward to build directly, aim nearby. Think 25 − 1, 21 + 3, or 28 − 4. One part of the hand gets close; the remaining part supplies the correction.
Reveal solutionHide solution for level 4
5 × 5 − 5 ÷ 5 = 24
Two 5s make 25. The other two make the 1 we need to subtract.
Browse all 243 problemsHide 243 problems · Level 4
Ordered by the four numbers. Select a hand to reveal one of its easiest solutions. Scroll the list to see every problem in this level.
11410Solution
(10 × (1 + 1)) + 4 = 24
1169Solution
(9 × (1 + 1)) + 6 = 24
11612Solution
(6 × (1 + 1)) + 12 = 24
11710Solution
(7 × (1 + 1)) + 10 = 24
1188Solution
(8 × (1 + 1)) + 8 = 24
12313Solution
((13 × 2) − 3) + 1 = 24
1255Solution
((5 × 5) − 2) + 1 = 24
12510Solution
((10 × 2) − 1) + 5 = 24
12611Solution
((6 × 2) + 1) + 11 = 24
12613Solution
13 + ((6 × 2) − 1) = 24
1279Solution
((7 × 2) + 1) + 9 = 24
12710Solution
(7 × (2 × 1)) + 10 = 24
12711Solution
((7 × 2) − 1) + 11 = 24
12712Solution
((7 − 1) × 2) + 12 = 24
12810Solution
((8 − 1) × 2) + 10 = 24
1337Solution
(7 × (3 × 1)) + 3 = 24
1338Solution
((8 − 1) × 3) + 3 = 24
1347Solution
((7 × 3) − 1) + 4 = 24
1356Solution
((5 + 1) × 3) + 6 = 24
13510Solution
((5 × 3) − 1) + 10 = 24
13610Solution
((10 × 3) × 1) − 6 = 24
13710Solution
(7 × (3 − 1)) + 10 = 24
1445Solution
(5 × (4 × 1)) + 4 = 24
1446Solution
((6 − 1) × 4) + 4 = 24
1447Solution
((4 × 4) + 1) + 7 = 24
1448Solution
((4 × 1) × 4) + 8 = 24
1455Solution
((5 × 4) − 1) + 5 = 24
1457Solution
((7 × 4) − 5) + 1 = 24
1459Solution
(5 × (4 − 1)) + 9 = 24
1466Solution
(6 × (4 − 1)) + 6 = 24
14610Solution
(10 × (4 − 1)) − 6 = 24
1556Solution
((5 + 1) × 5) − 6 = 24
15510Solution
((10 − 5) × 5) − 1 = 24
1566Solution
(6 × (5 × 1)) − 6 = 24
1567Solution
((7 − 1) × 5) − 6 = 24
15611Solution
((11 − 6) × 5) − 1 = 24
15813Solution
((13 − 8) × 5) − 1 = 24
1666Solution
(6 × (6 − 1)) − 6 = 24
2229Solution
((9 + 2) × 2) + 2 = 24
22210Solution
((10 × 2) + 2) + 2 = 24
22310Solution
((10 + 3) × 2) − 2 = 24
2249Solution
((9 × 2) + 2) + 4 = 24
22411Solution
((11 × 2) − 2) + 4 = 24
22412Solution
((4 + 2) × 2) + 12 = 24
22413Solution
((13 × 2) − 4) + 2 = 24
2257Solution
(7 × 2) + (5 × 2) = 24
2258Solution
((8 + 5) × 2) − 2 = 24
22512Solution
(12 + (5 × 2)) + 2 = 24
2267Solution
((7 + 2) × 2) + 6 = 24
22611Solution
((11 − 2) × 2) + 6 = 24
22613Solution
((13 + 2) × 2) − 6 = 24
22712Solution
((7 × 2) − 2) + 12 = 24
2289Solution
((9 × 2) − 2) + 8 = 24
22910Solution
((9 − 2) × 2) + 10 = 24
22912Solution
(9 × 2) + (12 ÷ 2) = 24
221013Solution
13 + (10 + (2 ÷ 2)) = 24
221112Solution
(11 + (2 ÷ 2)) + 12 = 24
221213Solution
13 + (12 − (2 ÷ 2)) = 24
2357Solution
((5 × 3) + 2) + 7 = 24
2358Solution
((8 × 2) + 3) + 5 = 24
23513Solution
(13 + (3 × 2)) + 5 = 24
2368Solution
((6 × 3) − 2) + 8 = 24
2377Solution
((7 × 2) + 3) + 7 = 24
23710Solution
((10 × 2) − 3) + 7 = 24
23810Solution
(10 + (3 × 2)) + 8 = 24
23912Solution
((9 − 3) × 2) + 12 = 24
231010Solution
((10 − 3) × 2) + 10 = 24
2449Solution
((9 − 2) × 4) − 4 = 24
24410Solution
((4 × 4) − 2) + 10 = 24
2455Solution
((5 + 5) × 2) + 4 = 24
2456Solution
((5 + 4) × 2) + 6 = 24
24510Solution
((5 × 2) + 10) + 4 = 24
24611Solution
((11 × 2) − 4) + 6 = 24
24613Solution
((13 − 4) × 2) + 6 = 24
2477Solution
((7 + 7) × 2) − 4 = 24
24813Solution
(13 × (8 ÷ 4)) − 2 = 24
24910Solution
((9 × 2) − 4) + 10 = 24
2557Solution
((7 × 2) + 5) + 5 = 24
2559Solution
((5 × 2) + 5) + 9 = 24
2569Solution
(5 × (6 ÷ 2)) + 9 = 24
2577Solution
((5 × 2) + 7) + 7 = 24
25711Solution
((11 × 2) − 5) + 7 = 24
25713Solution
(13 × (7 − 5)) − 2 = 24
25910Solution
((10 × 2) − 5) + 9 = 24
25911Solution
((9 × 2) − 5) + 11 = 24
251012Solution
((12 − 5) × 2) + 10 = 24
251013Solution
(13 × (10 ÷ 5)) − 2 = 24
251112Solution
((11 − 5) × 2) + 12 = 24
251213Solution
(13 + (12 ÷ 2)) + 5 = 24
2666Solution
((6 × 2) + 6) + 6 = 24
26813Solution
(13 + (6 ÷ 2)) + 8 = 24
261011Solution
(10 + (6 ÷ 2)) + 11 = 24
261112Solution
(11 × (12 ÷ 6)) + 2 = 24
261212Solution
((12 − 6) × 2) + 12 = 24
261213Solution
(13 × (12 ÷ 6)) − 2 = 24
27911Solution
((11 × 2) − 7) + 9 = 24
27913Solution
13 + ((9 × 2) − 7) = 24
271011Solution
((10 × 2) − 7) + 11 = 24
271213Solution
((13 − 7) × 2) + 12 = 24
281012Solution
((10 × 2) − 8) + 12 = 24
281013Solution
(13 × (10 − 8)) − 2 = 24
291010Solution
(10 + (10 ÷ 2)) + 9 = 24
291111Solution
((11 × 2) − 9) + 11 = 24
291113Solution
(13 × (11 − 9)) − 2 = 24
291313Solution
13 + ((13 + 9) ÷ 2) = 24
2101213Solution
13 + ((12 + 10) ÷ 2) = 24
3333Solution
((3 × 3) × 3) − 3 = 24
3335Solution
(5 × 3) + (3 × 3) = 24
33310Solution
((10 − 3) × 3) + 3 = 24
33411Solution
(11 + (3 × 3)) + 4 = 24
33413Solution
((13 − 4) × 3) − 3 = 24
3355Solution
(5 × 5) − (3 ÷ 3) = 24
33512Solution
((12 − 5) × 3) + 3 = 24
3367Solution
((7 × 3) − 3) + 6 = 24
3378Solution
((3 × 3) + 7) + 8 = 24
33910Solution
(10 × 3) − (9 − 3) = 24
331013Solution
13 + (10 + (3 ÷ 3)) = 24
331213Solution
13 + (12 − (3 ÷ 3)) = 24
3444Solution
((4 + 3) × 4) − 4 = 24
34410Solution
((10 − 3) × 4) − 4 = 24
34411Solution
((4 × 4) − 3) + 11 = 24
3455Solution
((5 × 3) + 4) + 5 = 24
34511Solution
((11 × 3) − 4) − 5 = 24
3477Solution
((7 × 3) − 4) + 7 = 24
3478Solution
((7 − 3) × 4) + 8 = 24
34712Solution
(7 × (12 ÷ 4)) + 3 = 24
341010Solution
(10 × 3) − (10 − 4) = 24
3578Solution
((7 × 3) − 5) + 8 = 24
3589Solution
(9 × (8 − 5)) − 3 = 24
351011Solution
(10 × 3) − (11 − 5) = 24
36610Solution
(10 × (6 − 3)) − 6 = 24
36710Solution
(7 × (6 ÷ 3)) + 10 = 24
36713Solution
((13 − 7) × 3) + 6 = 24
36913Solution
(13 + (6 ÷ 3)) + 9 = 24
37710Solution
(7 × (10 − 7)) + 3 = 24
37811Solution
(7 × (11 − 8)) + 3 = 24
37912Solution
((12 − 7) × 3) + 9 = 24
371013Solution
(7 × (13 − 10)) + 3 = 24
38911Solution
(9 × (11 − 8)) − 3 = 24
38913Solution
((13 − 8) × 3) + 9 = 24
391013Solution
(9 × (13 − 10)) − 3 = 24
4444Solution
((4 × 4) + 4) + 4 = 24
4449Solution
((9 − 4) × 4) + 4 = 24
44411Solution
((11 − 4) × 4) − 4 = 24
44512Solution
((12 − 5) × 4) − 4 = 24
44513Solution
13 + ((4 × 4) − 5) = 24
44611Solution
((11 − 6) × 4) + 4 = 24
44613Solution
((13 − 6) × 4) − 4 = 24
4478Solution
(7 × (8 − 4)) − 4 = 24
441112Solution
(11 + (4 ÷ 4)) + 12 = 24
441213Solution
13 + (12 − (4 ÷ 4)) = 24
4559Solution
((5 × 4) − 5) + 9 = 24
45610Solution
(5 × (10 − 6)) + 4 = 24
4579Solution
(5 × (7 − 4)) + 9 = 24
45710Solution
(10 × (7 − 5)) + 4 = 24
45711Solution
(5 × (11 − 7)) + 4 = 24
45912Solution
(5 × (12 ÷ 4)) + 9 = 24
45913Solution
(5 × (13 − 9)) + 4 = 24
4669Solution
(9 × (6 − 4)) + 6 = 24
46612Solution
(6 × (6 − 4)) + 12 = 24
46710Solution
(7 × (6 − 4)) + 10 = 24
46810Solution
((10 − 6) × 4) + 8 = 24
47711Solution
(7 × (11 − 7)) − 4 = 24
47810Solution
(7 × (8 ÷ 4)) + 10 = 24
47811Solution
((11 − 7) × 4) + 8 = 24
47812Solution
(7 × (12 − 8)) − 4 = 24
47913Solution
(7 × (13 − 9)) − 4 = 24
48913Solution
((13 − 9) × 4) + 8 = 24
491011Solution
(10 × (11 − 9)) + 4 = 24
4101012Solution
(10 × (12 − 10)) + 4 = 24
4101112Solution
(10 + (12 ÷ 4)) + 11 = 24
4101113Solution
(10 × (13 − 11)) + 4 = 24
5555Solution
(5 × 5) − (5 ÷ 5) = 24
5567Solution
(5 × 5) − (7 − 6) = 24
55611Solution
((11 − 5) × 5) − 6 = 24
5588Solution
(5 × 5) − (8 ÷ 8) = 24
5589Solution
(5 × (8 − 5)) + 9 = 24
5599Solution
(5 × 5) − (9 ÷ 9) = 24
55910Solution
(5 × 5) − (10 − 9) = 24
551010Solution
(5 × 5) − (10 ÷ 10) = 24
551011Solution
(5 × 5) − (11 − 10) = 24
551013Solution
13 + (10 + (5 ÷ 5)) = 24
551111Solution
(5 × 5) − (11 ÷ 11) = 24
551112Solution
(11 + (5 ÷ 5)) + 12 = 24
551213Solution
13 + (12 − (5 ÷ 5)) = 24
551313Solution
(5 × 5) − (13 ÷ 13) = 24
5668Solution
(6 × (8 − 5)) + 6 = 24
56612Solution
((12 − 6) × 5) − 6 = 24
5679Solution
(9 × (7 − 5)) + 6 = 24
561012Solution
(6 × (10 ÷ 5)) + 12 = 24
57710Solution
(7 × (7 − 5)) + 10 = 24
57910Solution
(5 × (10 − 7)) + 9 = 24
571010Solution
(7 × (10 ÷ 5)) + 10 = 24
59912Solution
(5 × (12 − 9)) + 9 = 24
591013Solution
(5 × (13 − 10)) + 9 = 24
5101111Solution
(11 + (10 ÷ 5)) + 11 = 24
6669Solution
(6 × (9 − 6)) + 6 = 24
66611Solution
(6 × (11 − 6)) − 6 = 24
66710Solution
(6 × (10 − 7)) + 6 = 24
66712Solution
(6 × (12 − 7)) − 6 = 24
66811Solution
(6 × (11 − 8)) + 6 = 24
66813Solution
(6 × (13 − 8)) − 6 = 24
66910Solution
(10 × (9 − 6)) − 6 = 24
661013Solution
(6 × (13 − 10)) + 6 = 24
661112Solution
(11 + (6 ÷ 6)) + 12 = 24
661213Solution
13 + (12 − (6 ÷ 6)) = 24
6799Solution
(9 × (9 − 7)) + 6 = 24
671010Solution
(10 × (10 − 7)) − 6 = 24
6888Solution
(8 × (8 − 6)) + 8 = 24
68910Solution
(9 × (10 − 8)) + 6 = 24
681011Solution
(10 × (11 − 8)) − 6 = 24
69911Solution
(9 × (11 − 9)) + 6 = 24
691012Solution
(9 × (12 − 10)) + 6 = 24
691112Solution
(6 × (11 − 9)) + 12 = 24
691113Solution
(9 × (13 − 11)) + 6 = 24
6101013Solution
(10 × (13 − 10)) − 6 = 24
6101212Solution
(6 × (12 − 10)) + 12 = 24
6111112Solution
(11 + (12 ÷ 6)) + 11 = 24
6111213Solution
(6 × (13 − 11)) + 12 = 24
6121313Solution
13 + (13 − (12 ÷ 6)) = 24
77910Solution
(7 × (9 − 7)) + 10 = 24
771013Solution
13 + (10 + (7 ÷ 7)) = 24
771112Solution
(11 + (7 ÷ 7)) + 12 = 24
771213Solution
13 + (12 − (7 ÷ 7)) = 24
7889Solution
(8 × (9 − 7)) + 8 = 24
781010Solution
(7 × (10 − 8)) + 10 = 24
791011Solution
(7 × (11 − 9)) + 10 = 24
7101012Solution
(7 × (12 − 10)) + 10 = 24
7101113Solution
(7 × (13 − 11)) + 10 = 24
88810Solution
(8 × (10 − 8)) + 8 = 24
881012Solution
(8 × (12 − 10)) + 8 = 24
881013Solution
13 + (10 + (8 ÷ 8)) = 24
881112Solution
(11 + (8 ÷ 8)) + 12 = 24
881213Solution
13 + (12 − (8 ÷ 8)) = 24
991013Solution
13 + (10 + (9 ÷ 9)) = 24
991112Solution
(11 + (9 ÷ 9)) + 12 = 24
991213Solution
13 + (12 − (9 ÷ 9)) = 24
10101013Solution
13 + (10 + (10 ÷ 10)) = 24
10101112Solution
(11 + (10 ÷ 10)) + 12 = 24
10101213Solution
13 + (12 − (10 ÷ 10)) = 24
10121213Solution
13 + (10 + (12 ÷ 12)) = 24
10131313Solution
13 + (10 + (13 ÷ 13)) = 24
12131313Solution
13 + (12 − (13 ÷ 13)) = 24
5Make a multiple of 24
Expand the target: 48 ÷ 2, 72 ÷ 3, 96 ÷ 4, or 144 ÷ 6. This asks you to recognize a larger number as a useful stopping point before dividing it down.
Reveal solutionHide solution for level 5
(7 × 7 − 1) ÷ 2 = 24
Build 49, adjust it to 48, then halve it.
Browse all 14 problemsHide 14 problems · Level 5
Ordered by the four numbers. Select a hand to reveal one of its easiest solutions. Scroll the list to see every problem in this level.
1277Solution
((7 × 7) − 1) ÷ 2 = 24
151111Solution
((11 × 11) − 1) ÷ 5 = 24
161113Solution
((13 × 11) + 1) ÷ 6 = 24
171313Solution
((13 × 13) − 1) ÷ 7 = 24
2588Solution
((8 × 5) + 8) ÷ 2 = 24
35713Solution
((13 × 5) + 7) ÷ 3 = 24
351212Solution
((12 × 5) + 12) ÷ 3 = 24
36611Solution
((11 × 6) + 6) ÷ 3 = 24
441010Solution
((10 × 10) − 4) ÷ 4 = 24
48811Solution
((11 × 8) + 8) ÷ 4 = 24
5101011Solution
((11 × 10) + 10) ÷ 5 = 24
6889Solution
((8 + 8) × 9) ÷ 6 = 24
69910Solution
((10 × 9) ÷ 6) + 9 = 24
6111212Solution
((12 × 11) + 12) ÷ 6 = 24
6Less obvious complementary totals
There are many ways to subtract your way to 24. Some, such as 35 − 11 or 42 − 18, ask you to see a relationship between less familiar intermediate totals.
Reveal solutionHide solution for level 6
(4 + 1) × 7 − 11 = 24
Make 35 first, then recognize that the remaining 11 brings it back to 24.
Browse all 55 problemsHide 55 problems · Level 6
Ordered by the four numbers. Select a hand to reveal one of its easiest solutions. Scroll the list to see every problem in this level.
12911Solution
(11 × (2 + 1)) − 9 = 24
13811Solution
(11 × 3) − (8 + 1) = 24
13910Solution
((10 + 1) × 3) − 9 = 24
131112Solution
((11 + 1) × 3) − 12 = 24
131212Solution
((12 × 3) × 1) − 12 = 24
131213Solution
((12 × 3) − 13) + 1 = 24
14711Solution
(7 × (4 + 1)) − 11 = 24
14913Solution
((9 × 4) − 13) + 1 = 24
15710Solution
(7 × 5) − (10 + 1) = 24
23813Solution
((13 + 3) × 2) − 8 = 24
231111Solution
((11 × 3) − 11) + 2 = 24
231313Solution
(13 × 3) − (13 + 2) = 24
24712Solution
((7 + 2) × 4) − 12 = 24
241112Solution
((11 − 2) × 4) − 12 = 24
2579Solution
(7 × 5) − (9 + 2) = 24
2789Solution
((9 + 7) × 2) − 8 = 24
33311Solution
(11 × 3) − (3 × 3) = 24
35813Solution
(8 × 5) − (13 + 3) = 24
37913Solution
(9 × 7) − (13 × 3) = 24
38810Solution
((10 × 8) − 8) ÷ 3 = 24
44713Solution
(13 × 4) − (7 × 4) = 24
4489Solution
(9 × 4) − (8 + 4) = 24
45813Solution
((8 × 4) − 13) + 5 = 24
47911Solution
(11 × (7 − 4)) − 9 = 24
471113Solution
(11 × 4) − (13 + 7) = 24
48813Solution
((13 × 8) − 8) ÷ 4 = 24
491111Solution
(11 × 4) − (11 + 9) = 24
4101011Solution
(11 × 4) − (10 + 10) = 24
4121212Solution
(12 × (12 ÷ 4)) − 12 = 24
55811Solution
(8 × 5) − (11 + 5) = 24
5669Solution
(9 × 6) − (6 × 5) = 24
571011Solution
(7 × (10 − 5)) − 11 = 24
571212Solution
(12 × 7) − (12 × 5) = 24
5888Solution
(8 × 5) − (8 + 8) = 24
58913Solution
(9 × 5) − (13 + 8) = 24
581212Solution
(12 × (8 − 5)) − 12 = 24
591011Solution
(9 × 5) − (11 + 10) = 24
5101013Solution
((13 × 10) − 10) ÷ 5 = 24
66610Solution
(10 × 6) − (6 × 6) = 24
66711Solution
(11 × 6) − (7 × 6) = 24
66913Solution
(13 × 6) − (9 × 6) = 24
67711Solution
(7 × 6) − (11 + 7) = 24
671111Solution
(7 × (11 − 6)) − 11 = 24
6121213Solution
((13 × 12) − 12) ÷ 6 = 24
78810Solution
(10 × 8) − (8 × 7) = 24
78811Solution
(8 × (11 − 7)) − 8 = 24
791212Solution
(12 × 9) − (12 × 7) = 24
88811Solution
(11 × 8) − (8 × 8) = 24
88912Solution
(12 × 8) − (9 × 8) = 24
88913Solution
(8 × (13 − 9)) − 8 = 24
891111Solution
(11 × (11 − 8)) − 9 = 24
8111212Solution
(12 × (11 − 8)) − 12 = 24
9111212Solution
(12 × 11) − (12 × 9) = 24
9121212Solution
(12 × (12 − 9)) − 12 = 24
10121212Solution
(12 × 12) − (12 × 10) = 24
7Fractional constructions
The last level requires a non-whole-number intermediate. These solutions can feel backwards: an awkward fraction is exactly what makes the puzzle work.
Reveal solutionHide solution for level 7
8 ÷ (3 − 8 ÷ 3) = 24
8 ÷ 3 is 2⅔. Subtract that from 3 to get ⅓. Dividing 8 by ⅓ gives 24.
Browse all 16 problemsHide 16 problems · Level 7
Ordered by the four numbers. Select a hand to reveal one of its easiest solutions. Scroll the list to see every problem in this level.
1346Solution
6 ÷ (1 − (3 ÷ 4)) = 24
1456Solution
4 ÷ (1 − (5 ÷ 6)) = 24
1555Solution
5 × (5 − (1 ÷ 5)) = 24
1668Solution
6 ÷ (1 − (6 ÷ 8)) = 24
181212Solution
12 ÷ ((12 ÷ 8) − 1) = 24
221111Solution
11 × (2 + (2 ÷ 11)) = 24
221313Solution
13 × (2 − (2 ÷ 13)) = 24
23512Solution
12 ÷ (3 − (5 ÷ 2)) = 24
241010Solution
10 × (2 + (4 ÷ 10)) = 24
25510Solution
5 × (5 − (2 ÷ 10)) = 24
27710Solution
7 × (2 + (10 ÷ 7)) = 24
3377Solution
7 × (3 + (3 ÷ 7)) = 24
3388Solution
8 ÷ (3 − (8 ÷ 3)) = 24
4477Solution
7 × (4 − (4 ÷ 7)) = 24
55711Solution
5 × (7 − (11 ÷ 5)) = 24
57711Solution
7 × (5 − (11 ÷ 7)) = 24
Where the puzzles fall
Once every hand takes its easiest route, the distribution is concentrated near the beginning of the hierarchy. Select a count to browse all the problems at that level.
| Solution level | Hands | Share |
|---|---|---|
| 1. Direct arithmetic | 226 | 16.59% |
| 2. Obvious factors and cancellation | 226 | 16.59% |
| 3. Construct familiar factors | 582 | 42.73% |
| 4. Nearby totals and small corrections | 243 | 17.84% |
| 5. Make a multiple of 24 | 14 | 1.03% |
| 6. Less obvious complementary totals | 55 | 4.04% |
| 7. Fractional constructions | 16 | 1.17% |
| Total | 1,362 | 100% |
Level 3 is the largest group: 582 hands, or about 43%. Together, the first three levels account for 1,034 hands—roughly 76% of everything solvable. If I were building a practice sequence, I would spend a lot of time on familiar factors and the different ways to construct them.
Only 14 hands land in Level 5. That does not mean dividing a larger multiple is rarely possible. It means most hands with that route also have an easier one. The 2, 5, 8, 9 example is exactly that phenomenon.
At the far end, just 16 hands require fractions: about 1.17% of the solvable set. These are not merely hands with a clever fractional solution. Every solution to each of these hands passes through a non-integer value. Another example is 1, 3, 4, 6: 6 ÷ (1 − 3 ÷ 4) = 24.
What the classification does—and does not—say
Some boundaries are judgment calls. For this first pass, I treated subtracting 1 through 6 from an overshoot as a small correction. A mixed multiplication or division route requiring a larger subtraction falls in Level 6; that puts 36 − 12 there as well as 35 − 11. Those may not feel equally difficult to a particular player. The counts are reproducible under these rules, but the hierarchy is still open to refinement.
The preparation matters too. A solution does not become Level 3 just because its final step is 4 × 6 if getting the 6 required a harder division. Likewise, multiplying a difficult three-card solution by an unused 1 does not turn it into an easy cancellation puzzle.
These percentages describe distinct combinations, not the odds of a random deal. A hand with four different numbers can be dealt in more ways than four identical numbers. Each counts once here. The 458 unsolvable combinations are kept separate and receive no difficulty level.
A way to practice seeing
The useful next step is to separate recognition from calculation. A student who can multiply 6 by 4 may still need practice seeing that two differences can produce those factors. Another may recognize factor pairs immediately but never think to build 25 and subtract 1.
That suggests a more focused way to practice: choose a family of ideas, try several hands, then look for the same pattern in a mixed set. We can eventually compare these proposed levels with actual solve times and revise the order. For now, the most useful question to ask after finding an answer is: was there a simpler way to see 24?