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

Example Grid:
11 20 16
7
x - 1
x + 1
—
17
—
—
x + 2
23
—
—
x² + 1

Your Workings For Grid Sum

Enter your working out in this box:

Then insert your suggested answers in the grid below:

11
20
16
7
x - 1
x + 1
17
x + 2
23
x² + 1

Reveal the Answer

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

Grid Sum – Easy

Visual strategy: lightly pencil in candidate values only when you are confident — avoid guessing.

  • Identify the “almost complete” row/column.
  • Calculate the missing value.
  • Recalculate the crossing total to confirm.

Finish: once the grid is full, re-add every row and column to confirm perfection.

Full help: Grid Sum

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