Geometry
Perimeter
Name: Date:
Find the perimeter of each rectangle. All lengths are in centimetres.
1 cm
2 cm
3 cm
4 cm
5 cm
6 cm
7 cm
8 cm
Free · Grade 3 · Sides to 35 cm
Perimeter of a rectangle worksheets
Working on perimeter of a rectangle? Print this sheet as it is, or change the level and questions first.
- Answer key included
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Ready to printPerimeter of a rectangle
The answer key prints on a separate page.
What's on this sheet
Two numbers are printed, the length and the width, and the work is realising there are four sides rather than two. Some children add the two labels and stop; some walk the rectangle and add all four; some find the shortcut of doubling the sum. All three are right roads and the sheet does not insist on one, because the understanding to build is that perimeter is a journey round an edge.
Why this sheet works
The figures are drawn to their real proportions, so a long thin rectangle looks long and thin and a square looks square. That matters more than it sounds: a child who is told the sides are 18 and 4 and shown a shape that looks like neither has been given a picture that argues with the numbers.