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Perimeter of rectangles.

Calculate a rectangle’s perimeter from labelled side lengths.

Numihana · England Year 3

Perimeter of rectangles

Practice sheet

Name: ______________
Date: ______________

Calculate a rectangle’s perimeter from labelled side lengths.

1

Find the perimeter of this 10 cm by 4 cm rectangle.

10 × 4 cm · diagram not to scale
Answer: ________________
2

Find the perimeter of this 7 cm by 2 cm rectangle.

7 × 2 cm · diagram not to scale
Answer: ________________
3

Find the perimeter of this 12 cm by 7 cm rectangle.

12 × 7 cm · diagram not to scale
Answer: ________________
4

Find the perimeter of this 2 cm by 11 cm rectangle.

2 × 11 cm · diagram not to scale
Answer: ________________
5

Find the perimeter of this 4 cm by 4 cm rectangle.

4 × 4 cm · diagram not to scale
Answer: ________________
6

Find the perimeter of this 4 cm by 6 cm rectangle.

4 × 6 cm · diagram not to scale
Answer: ________________
Numihana · England Year 3 · Perimeter of rectangles
Numihana · England Year 3

Perimeter of rectangles

Answer key

Name: ______________
Date: ______________

Calculate a rectangle’s perimeter from labelled side lengths.

1

Find the perimeter of this 10 cm by 4 cm rectangle.

10 × 4 cm · diagram not to scale
Answer: 28 cm
2

Find the perimeter of this 7 cm by 2 cm rectangle.

7 × 2 cm · diagram not to scale
Answer: 18 cm
3

Find the perimeter of this 12 cm by 7 cm rectangle.

12 × 7 cm · diagram not to scale
Answer: 38 cm
4

Find the perimeter of this 2 cm by 11 cm rectangle.

2 × 11 cm · diagram not to scale
Answer: 26 cm
5

Find the perimeter of this 4 cm by 4 cm rectangle.

4 × 4 cm · diagram not to scale
Answer: 16 cm
6

Find the perimeter of this 4 cm by 6 cm rectangle.

4 × 6 cm · diagram not to scale
Answer: 20 cm
Numihana · England Year 3 · Perimeter of rectangles

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The skill behind this activity

Calculate a rectangle’s perimeter from labelled side lengths.

Department for Education: mathematics programmes of study ↗

Year 3 → Measurement · Selected statutory skill. Pack 2.2.0 · source checked 2026-10-12.

For teachers and parents

Add every outside side. Opposite sides of a rectangle are equal, so add the length and width and double.

A common slip

Perimeter measures around a boundary; it is not area.

Curriculum coverage

Worked example

Find the perimeter of this 3 cm by 6 cm rectangle.

3 × 6 cm · diagram not to scale
Answer: 18 cm

Add every outside side. Opposite sides of a rectangle are equal, so add the length and width and double.