How to play
- Tap a number, then an operation (+ − × ÷), then a second number. The two cards are replaced by the result.
- Keep combining until one number is left. If it is 24, you solved the deal.
- Use Undo to step back or Reset to start the deal again. Show answer reveals one solution but ends your streak.
Keyboard: 1–4 choose a card, + - * / choose an operation.
Modes
Cards 1–10 is the classroom version. Full deck 1–13 adds J = 11, Q = 12 and K = 13, which makes many deals harder. Fractions are allowed along the way, so 8 ÷ (3 − 8 ÷ 3) is a valid answer for 3, 3, 8, 8.
Tips
- Learn the factor pairs of 24: 1 × 24, 2 × 12, 3 × 8 and 4 × 6. Try to build one half of a pair from two cards and the other half from the rest.
- Look for ways to make 0 or 1 from two cards; they let you discard a pair without changing the result.
- Remember subtraction and division in both orders: 12 − 4 and 4 − 12 are different.
- When nothing works, think about fractions: dividing by a fraction is the trick behind the hardest deals.
Practise the patterns in our Make 24 strategy guide.
FAQ
Is every set of four numbers solvable?
No. For example 1, 1, 1, 1 has no solution. This game only deals combinations that can make 24.