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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:   Measurement

Curriculum subtopic:   Measure and Calculate Shapes

Difficulty level:  

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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. Calculate the perimeter by adding together all the lengths of the sides.

 

Example

What is the length of one side?

Polygon
 
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 the answer.

 

Want to understand this further and learn how this links to other topics in maths?
Why not watch this video?

 

What is the length of one side?

Polygon
 
Perimeter: 20 cm

What is the length of one side?

Polygon
 
Perimeter: 60 cm

What is the length of one side?

Polygon
 
Perimeter: 80 cm

What is the length of one side?

Polygon
 
Perimeter: 27 cm

What is the length of one side?

Polygon
 
Perimeter: 48 cm

What is the length of one side?

Polygon
 
Perimeter: 90 cm

What is the length of one side?

Polygon
 
Perimeter: 60 cm

What is the length of one side?

Polygon
 
Perimeter: 63 cm

What is the length of one side?

Polygon
 
Perimeter: 72 cm

What is the length of one side?

Polygon
 
Perimeter: 70 cm
  • Question 1

What is the length of one side?

Polygon
 
Perimeter: 20 cm
CORRECT ANSWER
4cm
4 cm
EDDIE SAYS
20 ÷ 5 = 4 cm
  • Question 2

What is the length of one side?

Polygon
 
Perimeter: 60 cm
CORRECT ANSWER
10 cm
10cm
EDDIE SAYS
60 ÷ 6 = 10 cm
  • Question 3

What is the length of one side?

Polygon
 
Perimeter: 80 cm
CORRECT ANSWER
10cm
10 cm
EDDIE SAYS
80 ÷ 8 = 10 cm
  • Question 4

What is the length of one side?

Polygon
 
Perimeter: 27 cm
CORRECT ANSWER
3cm
3 cm
EDDIE SAYS
27 ÷ 9 = 3 cm
  • Question 5

What is the length of one side?

Polygon
 
Perimeter: 48 cm
CORRECT ANSWER
6 cm
6cm
EDDIE SAYS
48 ÷ 8 = 6 cm
  • Question 6

What is the length of one side?

Polygon
 
Perimeter: 90 cm
CORRECT ANSWER
10cm
10 cm
EDDIE SAYS
90 ÷ 9 = 10 cm
  • Question 7

What is the length of one side?

Polygon
 
Perimeter: 60 cm
CORRECT ANSWER
6 cm
6cm
EDDIE SAYS
60 ÷ 10 = 6 cm
  • Question 8

What is the length of one side?

Polygon
 
Perimeter: 63 cm
CORRECT ANSWER
9 cm
9cm
EDDIE SAYS
63 ÷ 7 = 9 cm
  • Question 9

What is the length of one side?

Polygon
 
Perimeter: 72 cm
CORRECT ANSWER
9cm
9 cm
EDDIE SAYS
72 ÷ 8 = 9 cm
  • Question 10

What is the length of one side?

Polygon
 
Perimeter: 70 cm
CORRECT ANSWER
7cm
7 cm
EDDIE SAYS
70 ÷ 10 = 7 cm
---- OR ----

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