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Grid Sum Puzzle

Grid Sum – Level 1 – Medium

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 + 3)(x - 2)
  2. (x + 2)²
  3. x² + 2x + 1
  4. x² - x + 2
  5. (x + 2)(x - 1)
  6. 4x - 2
  7. (x - 2)(x + 2)
  8. x² - x + 3
  9. 4x - 1

Example Grid:
73 92 75
85
—
(x - 2)(x + 2)
—
91
—
—
—
64
4x - 1
—
x² - x + 3

Your Workings For Grid Sum

Enter your working out in this box:

Then insert your suggested answers in the grid below:

73
92
75
85
(x - 2)(x + 2)
91
64
4x - 1
x² - x + 3

Reveal the Answer

Reveal Answer
Additional instructions for Grid Sum (Level 1, Medium)

Grid Sum – Medium

Medium grids usually require more than one step before a blank becomes solvable.

Best approach:

  • Fill any row/column with only one blank first.
  • If no single-blank lines exist, look for a row that can be expressed algebraically (e.g. one blank depends on another).
  • Solve logically rather than by guesswork.

Tip: keep track of intermediate totals so you don’t redo the same sums repeatedly.

Full help: Grid Sum

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