Simple Number Tools
Games

Make 24

The classic Make 24 math game: use all four numbers once, with + - x and division, to reach 24. Every set is solvable, with a hint and your best streak saved.

Make 24

Use all four numbers exactly once, with + - × ÷ and brackets, to make 24. For example, from 3, 8, 2, 4 you could write 3 × 8 × (4 - 2 - 1)... type your own and check it. Every set shown can be solved.

Make 24 is a small, addictive arithmetic puzzle: you get four numbers and must combine them - each used exactly once, with addition, subtraction, multiplication, division, and brackets - so the result is 24. It is great practice for mental arithmetic and for thinking about the order of operations.

How to Play

  1. Four numbers appear. Type an expression that uses all four exactly once and equals 24, for example (3 + 5) * 3 or 6 / (1 - 3 / 4).
  2. Press Check. A correct answer extends your streak; the best streak is saved on your device.
  3. Stuck? Use Show a solution for one way to do it, or New numbers to skip. Every set shown can be solved.

Tips

  • Look for pairs that make a useful number first - two numbers that make 6 pair with a 4, two that make 8 pair with a 3, and so on.
  • Division and brackets open up sets that look impossible with only + and x.
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