✖️ Crossmath

Crossmath is a grid of interlocking equations: each row and each column of the 3×3 number grid must form a correct equation with the operators shown.

How to play

1. Fill every blank cell with a digit.
2. Check each across and down equation separately.
3. Any arrangement that makes all six equations true solves it.

Strategy tips

• Solve the equations with a single unknown first — they hand you grid entries for free.
• Corner cells sit in two equations; use one to confirm the other.
• Check operator order on each line before placing — × binds before +.

FAQ

Do across and down equations share cells?

Yes — the 3×3 number grid is shared, so every digit must satisfy two equations at once.

Is standard precedence used?

Yes — × and ÷ apply before + and − in each equation.

Are solutions unique?

Any arrangement that makes all six equations true counts as a solve.

Difficulty affects grid size and time is your score — finish fast, post to the daily leaderboard, or race a friend.

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