The smart way to improve grades

Comprehensive & curriculum aligned

Affordable pricing from £10/month

Perimeter: What Does One Side Measure?

In this worksheet, students calculate the length of one side of a regular polygon by first counting the number of sides and then dividing.

'Perimeter: What Does One Side Measure?' worksheet

Key stage:  KS 2

Curriculum topic:  Maths and Numerical Reasoning

Curriculum subtopic:  2D Shapes: Triangles, Quadrilaterals and Polygons

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

This worksheet is about the perimeter of regular 2D shapes.  These are polygons whose sides are all equal in length.

The perimeter is the total distance around the outside of a 2D shape. You calculate it by adding together all the lengths of the sides.

 

Example

What is the length of one side?


Perimeter: 70 cm

 

Answer

First count the number of sides.

There are 10 in this regular shape (decagon)

If the length of 10 equal sides add to 70 cm, we can divide to find the length of one side.

70 ÷ 10 = 7

 

Each side is 7 cm long.

Remember to put cm in your answer

What is the length of one side?


Perimeter: 20 cm

What is the length of one side?


Perimeter: 60 cm

What is the length of one side?


Perimeter: 80 cm

What is the length of one side?


Perimeter: 27 cm

What is the length of one side?


Perimeter: 48 cm

What is the length of one side?


Perimeter: 90 cm

What is the length of one side?


Perimeter: 60 cm

What is the length of one side?


Perimeter: 63 cm

What is the length of one side?


Perimeter: 72 cm
  • Question 1

What is the length of one side?


Perimeter: 20 cm
CORRECT ANSWER
4cm
4 cm
  • Question 2

What is the length of one side?


Perimeter: 60 cm
CORRECT ANSWER
10 cm
10cm
  • Question 3

What is the length of one side?


Perimeter: 80 cm
CORRECT ANSWER
10cm
10 cm
  • Question 4

What is the length of one side?


Perimeter: 27 cm
CORRECT ANSWER
3cm
3 cm
  • Question 5

What is the length of one side?


Perimeter: 48 cm
CORRECT ANSWER
6 cm
6cm
  • Question 6

What is the length of one side?


Perimeter: 90 cm
CORRECT ANSWER
10cm
10 cm
  • Question 7

What is the length of one side?


Perimeter: 60 cm
CORRECT ANSWER
6 cm
6cm
  • Question 8

What is the length of one side?


Perimeter: 63 cm
CORRECT ANSWER
9 cm
9cm
  • Question 9

What is the length of one side?


Perimeter: 72 cm
CORRECT ANSWER
9cm
9 cm
---- OR ----

Sign up for a £1 trial so you can track and measure your child's progress on this activity.

What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Get started
laptop

Start your £1 trial today.
Subscribe from £10/month.