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Grid Sum Level 1 Easy maths puzzle involving algebra, columns, expressions and grid

Grid Sum – Level 1 – Easy

Home » Puzzles » Grid Sum » Level 1 - Easy » Grid Sum – Level 1 – Easy
Topics: algebra, columns, expressions, grid, linear equations, rows

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

Example Grid:
15 16 16
18
—
x² + 1
—
14
x
x - 1
—
15
—
x + 1
—

Your Workings For Grid Sum

Enter your working out in this box:

Then insert your suggested answers in the grid below:

15
16
16
18
x² + 1
14
x
x - 1
15
x + 1

Reveal the Answer

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

Grid Sum – Easy

What this puzzle is: fill in the missing numbers so that every row and column adds up to the total shown. Each number must work both horizontally and vertically.

How to begin:

  • Start with the row or column that has the most numbers already filled in.
  • Add the known numbers and subtract from the target total to find the missing value.
  • Write the number clearly, then immediately check it against the crossing row/column.

Tip: one correct placement usually unlocks another — keep scanning the grid after every fill.

Full help: Grid Sum

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