easy
5-7 equations with values under 20. Addition and subtraction only.
0 of 25 free easy Crossmath puzzles used
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Crossmath
Choose a difficulty
Place every tile exactly once so each fixed equation is true. Operators are fixed, and numbers can cross between across and down equations.
Today's editions
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medium
9-14 equations with values under 50. Larger connected grids with more crossings.
0 of 25 free medium Crossmath puzzles used
hard
12-18 equations with values up to 99, including multiplication and exact division.
0 of 25 free hard Crossmath puzzles used
From the rulebook
How to play Crossmath
Crossmath is a math crossword: a grid of interlocking across and down equations with the operators fixed and the numbers missing. Drag every number tile into the grid exactly once so that all the equations are simultaneously true.
Start with the most constrained equation, the one with the fewest empty cells or the most extreme result. Cells where an across and a down equation cross are the pivot points: a tile that works horizontally but breaks the vertical equation is in the wrong place. Easy puzzles stick to addition and subtraction; hard ones add multiplication and exact division with values up to 99.