Free board game · no download needed

Play Crossmath online

Fill the missing numbers so every crossing equation is correct.

How to play Crossmath

Choose Easy, Medium, Hard or Expert. Each difficulty generates fresh number crosswords.
Tap a number in the tray, then an empty square. You can also select the square first.
Every equation runs across or down. A number at a crossing belongs to both equations.
Easy uses addition and subtraction. Higher difficulties add multiplication and exact division.
A completed incorrect equation costs a heart. You have three hearts; tap a placed number to return it or use Undo.
Hints highlight a useful square, then help fill it. Solve every equation to earn points and up to three stars.
The daily puzzle is the same for everyone and awards 1.5× points. Your best times and scores are saved on this device.

Start with an equation that has only one missing number, then follow its crossings.
The timer measures your time without a countdown. Pause or leave the game and continue from your saved board.
After solving, share the same puzzle with a friend and a score to beat.