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Grid Sum Puzzle

Grid Sum – Level 1 – Easy

Other Puzzles

Each row and column must add up to the totals shown – but all the values are algebra expressions. Work out the value of x, then fill in the grid using each expression once.

Available Expressions (use each exactly once):

  1. x
  2. x + 1
  3. x + 2
  4. x – 1
  5. 2x
  6. 3x
  7. x²
  8. x² – 1
  9. x² + 1


18 21 17
15 x² x – 1
19 x² – 1
22 x

Your Workings For Grid Sum

Enter your working out in this box:

Then insert your suggested answers in the grid below:

Reveal the Answer

Reveal Answer

Answer: 

x = 3

18 21 17
15 x² x + 1 x – 1
19 2x x² – 1 x + 2
22 x 3x x² + 1