ThePuzzleLabs

Number Grid

Hard

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Play Hard Number Grid — ThePuzzleLabs

Try this Hard Number Grid puzzle on ThePuzzleLabs.

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Classic
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How to Play Number Grid

Rules

  • Every row and column is an arithmetic equation.
  • Equations are evaluated strictly left-to-right (no order of operations).
  • Fill in missing numbers (and operations at harder levels) so every equation is correct.
  • Each puzzle has exactly one solution.

Cell Types

  • Square cells — numbers (tap to enter a number)
  • Round cells — operations +, −, ×, ÷ (tap to toggle)
  • = signs separate the equation from its result

Keyboard Shortcuts

  • 0-9 Enter number
  • + - * / Enter operation
  • Space Cycle operations
  • Delete Erase cell
  • ↑↓←→ Navigate
  • Tab Next blank cell
  • U Undo
  • H Hint

Solve This Puzzle?

This will fill in the complete solution. The puzzle will be marked as “solved with reveal” rather than self-solved.

About hard number grids

The grid grows to 4×4, which means eight equations (four rows, four columns) with numbers up to 50. More importantly, some of the operation cells are blank too. You need to figure out not just which number goes where, but which operation connects them.

The good news: usually only one or two operations produce an integer result with the surrounding numbers. Try each mentally. If multiplication gives 37.5 but addition gives 15, addition is the one. This trial-and-error on operations is the main new skill at hard difficulty.

This level is aimed at older students (grades 5–8) and adults who want a moderate workout. If you are breezing through, head to expert.