Make the Number Solver

Make the Number Solver — Step by Step

Click a number card and type its value; click the target and type it. Then press Solve. Or play a generated puzzle and send it here with one click.

Make the Number Solver: rules, how to use it, tips

Combine the numbers you’re given with + − × ÷ to make the target exactly, using each number at most once.

The rules

You may add, subtract, multiply and divide.
Each number can be used once; the answers you make can be used again in later steps.
Every step must give a positive whole number — no negatives or fractions.
With the ‘use every number’ rule, all the numbers must be used.

Using the solver

Choose how many numbers and whether every number must be used, then enter the numbers and the target (or press Sample).
Press Solve to see the shortest way to make the target — or the closest you can get.

Tips

Get close with ×. Multiply to land near the target: for 952, 9 × 100 = 900 is a good start.
Fix the difference. Then make the gap with what’s left: 952 − 900 = 52, and 50 + 2 = 52.
Work backwards. If the target is a multiple of a number you have, try making the other factor.
Save small numbers. 1s and 2s are great for adjusting at the end — don’t use them up too early.

The full guide, with a worked example and common mistakes: How to play Make the Number.

Questions

Is there always a way to make the target?

Yes — every generated puzzle can be made exactly. The solver also finds the closest answer when a target can’t be made.

What are the big numbers?

In the six-number versions, some cards are 25, 50, 75 or 100.

Can I play with younger children?

Yes — choose ‘4 small (kids)’ for numbers 1 to 10 and targets up to about 100.

How do I check a puzzle I set myself?

Open the Make the Number Solver, enter the numbers and target and press Solve.