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Grid Sum Level 1 Medium maths puzzle involving algebra, column, expressions and grid

Grid Sum – Level 1 – Medium

Home » Puzzles » Grid Sum » Level 1 - Medium » Grid Sum – Level 1 – Medium
Topics: algebra, column, expressions, grid, linear equations, row

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

Example Grid:
27 45 30
34
—
(x + 1)(x - 1)
—
42
(x + 3)(x - 2)
(x + 2)²
—
26
—
—
—

Your Workings For Grid Sum

Enter your working out in this box:

Then insert your suggested answers in the grid below:

27
45
30
34
(x + 1)(x - 1)
42
(x + 3)(x - 2)
(x + 2)²
26

Reveal the Answer

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

Grid Sum – Medium

Look for balance patterns. If two rows share most numbers, differences between their totals can reveal a missing value.

  • Compare similar rows or columns.
  • Use subtraction between totals to isolate a blank.
  • Confirm the result satisfies both axes.

Finish: verify the entire grid once completed.

Full help: Grid Sum

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