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

Example Grid:
33 15 10
23
—
—
—
18
—
(x + 3)(x - 1)
—
17
—
(x - 1)(x + 1)
4x - 2

Your Workings For Grid Sum

Enter your working out in this box:

Then insert your suggested answers in the grid below:

33
15
10
23
18
(x + 3)(x - 1)
17
(x - 1)(x + 1)
4x - 2

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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