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FREE ONLINE MATH CROSSWORD

Play Crossmath Online

Place the number tiles so every horizontal and vertical equation balances.

Rule: × ÷ first (PEMDAS) Moves: 0 00:00
Select an empty slot (?) or tap a sorted number tile below.

Tap a slot (?) to select, or pick a tile below.

? Empty slot · ★ Hint locked · = ✓ Equation balances (local) · ≠ Conflict

ACTIVE EQUATIONSTap any [?] to jump
Number Tiles (Sorted)

HOW TO PLAY

How to play Crossmath (Cross Math) online

  1. Pick a cell or a sorted tile. Tap any empty slot (?) on the grid and then tap a number tile in the sorted tray — or tap a tile first and place it into a slot. Duplicate numbers are grouped with a ×N badge so you can scan the tray fast.
  2. Use the Active Equations bar on large grids. When you select a cell, the full horizontal (↔ Row) and vertical (↕ Col) equations passing through it appear right above the tray. Tap any slot pill in that bar to jump directly without panning.
  3. Local balance (= ✓) vs global Check. A green = ✓ means that single equation balances mathematically. Because rows and columns intersect, a number that balances one row might still be needed in another column — use Check anytime to verify against the puzzle’s unique solution.
  4. Follow order of operations (PEMDAS / BODMAS). Multiplication (×) and division (÷) are evaluated before addition (+) and subtraction (−). For example, 2 + 3 × 4 = 14, not 20.
  5. Stuck? Use Hint, Undo, Erase or Reset. Hint locks the one guaranteed tile into a slot. Undo and Erase are unlimited and free. Finishing a puzzle shows a full-board view and a text result you can copy.

Game rules and difficulty tiers

Fill every empty slot with one of the remaining number tiles so that each horizontal and vertical equation balances. Every built-in puzzle is an original layout verified by our constraint solver to have exactly one solution.

Difficulty tiers
TierGridTilesFeatures
Easy5 × 54–6Addition, subtraction and simple multiplication with small numbers
Medium7 × 77–10All four operations, order of operations (PEMDAS) and duplicate tiles
Hard9 × 911–14Three-operand equations, unknown results and chained equations (A = B = C)
Expert11 × 1115–20Sparse large grids, big numbers and dense duplicate tiles

Order of operations applies everywhere on this page: 8 + 2 × 3 = 14 (multiply first), not 30 (left to right). If you are working on a puzzle that uses left-to-right calculation, our Crossmath Solver lets you switch rules for custom grids.

Frequently asked questions

Is this Crossmath game free to play?

Yes. All 20 built-in puzzles are free to play in your browser, with no account, login or app download. JavaScript is needed to run the game on your device.

Are all puzzles guaranteed to have a unique solution?

Yes. Every built-in puzzle is verified by our constraint-satisfaction solver to have exactly one valid mathematical solution. The Check button compares your board against that unique solution.

Does Crossmath use order of operations (PEMDAS / BODMAS)?

The built-in puzzles on this page use standard order of operations: multiplication and division before addition and subtraction. For example, 2 + 3 × 4 = 14, not 20.

What does the ×2 or ×3 badge on a number tile mean?

Identical number tiles are grouped in ascending order so the tray stays compact. A ×3 badge means three tiles with that number remain available to place; a greyed 0/3 means all of them are on the board — tap it to recall one.

Can I solve a puzzle from my mobile app here?

This page offers built-in puzzles to play. To solve a custom grid from another game or a newspaper, open our free Crossmath Solver, which accepts any grid and remaining tiles.

Is my progress saved?

Solved puzzles are remembered only while this page stays open. Nothing about your game is written to browser storage or uploaded; refreshing starts a fresh session.