How to play Crossmath

Every row across and every column down is an equation. Fill each empty box with a digit from 1 to 9 so that all of them come out true at once.

The number in the bottom right corner is the answer to both its row and its column, so it has to work in both directions. That corner is usually the key to the whole grid.

• Multiply and divide happen before add and subtract, so 2 + 3 × 4 is 14, not 20.
• Every division comes out exact, with nothing left over.
• Every answer is a whole number, and never zero or negative.

You never have to guess. There is always a line somewhere with only one box left in it, and that box can only be one digit. Find it, fill it, and the next one opens up.

Tap a box, then tap a digit. A box turns green once every line through it is complete and correct.

Each grid is generated fresh on the server, so the answers are never hidden in this page.

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