# Worksheet on finding Perimeter of different Shapes

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Perimeter worksheet. A perimeter is a closed path that encompasses, surrounds, or outlines either a two-dimensional shape or a one-dimensional length. The perimeter of a circle or an ellipse is called its circumference. Calculating the perimeter has several practical applications.
1. Calculate perimeter 2 Rosie and Eva work out the perimeter of the shape below.
6 cm
4 cm
1 Work out the perimeter of each shape.
6 + 4 = 10,
a) 5 cm so the perimeter is
10 cm.
3 cm 3 cm Rosie The perimeter is
Eva
20 cm.
Who is correct?
5 cm
How do you know?
 perimeter = cm
b) 40 mm
20 mm
3 Tick the shapes with a perimeter of 16 cm.
8 cm
 perimeter = mm 2 cm 40 mm
c)

3m
6 cm
10 cm
2 cm
 perimeter = m
6 cm
2. 4 Which shape has the longest perimeter? Tick your answer. b) 80 mm
4 cm
2 cm 2 cm
30 mm
50 mm
3 cm 3 cm
20 mm
6 cm 6 cm
10 mm
4 cm
50 mm
30 mm
20 mm 20 mm
70 mm
 perimeter =
20 mm 20 mm What do you notice?
20 mm
6 This rectangle has a perimeter of 18 cm.
Show all your workings. Work out the length of side a.
5 Work out the perimeter of these shapes. 6 cm
a) 3 cm
a
2 cm
5 cm
9 cm perimeter = 18 cm
7 cm side a =
 perimeter =
8 cm © White Rose Maths 2019
3. Measure perimeter 2 Use a piece of wool to measure the perimeter of the hexagon.
1 Here are two rectangles.
A B 
3 a) Measure each side of the rectangle and label it.
Use a piece of wool to measure the perimeter of each rectangle.
How much wool did you need for each one?
b) What is the perimeter of the rectangle? 
A= B =
4. 4 Measure the perimeter of each shape. 6 Aisha is working out the perimeter of a rectangle.
a) She measures the length of all 4 sides and labels the rectangle.
15 cm
20 cm 20 cm
50 cm
 perimeter = How do you know that Aisha’s measurements are wrong?
b) 7 Is it possible to work out the perimeter of each shape?
a) 8 cm
yes no
b) 60 mm
 perimeter = 25 mm yes no
5 Draw a triangle with a perimeter of 15 cm. c)
yes no
60 mm
25 mm
How do you know whether you can or cannot find the
perimeter of each shape?
Talk about it with a partner.
5. Subtract lengths 2 Jack’s rope is 4 m 50 cm long.
He uses 2 m to make a swing.
How long is his rope now?
1 Complete the sentences to describe the lengths of
4 m 50 cm
the objects.
a)
? 2 m cut
Jack’s rope is now m and cm long.
3 Tommy, Rosie and Annie each measure their height.
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
The toy car is mm long.
b)
Annie Rosie Tommy
135 cm 1 m 15 cm
a) What is the difference in height between Tommy and Rosie?
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

The toy boat is cm long.
b) Annie is 30 mm shorter than Rosie. What is Annie’s height?
c) The toy boat is cm longer than the toy car.

The toy car is mm shorter than the toy boat.
6. 4 Nijah buys 5 m of ribbon. 7 Fill in the empty boxes so that each row and column adds
She uses 78 cm of the ribbon to decorate a bag. up to 2 m.
How much ribbon does she have left?
50 cm 50 cm
 m and cm
1 m 15 cm
5 Complete the number sentences.
85 cm
a) 2 m – 50 cm = cm
b) 85 mm – 2 cm = mm Talk about what you did with a partner.
c) 9 cm 5 mm – 20 mm = cm and mm
Create your own problem like this using a different total.
d) 100 mm – cm = 6 cm Ask a partner to find the answer.
6 Huan has a 10 m ball of string.
He uses 50 cm to replace his shoelace.
He uses some more of his string to make a bow for his arrows.
He has 7 m and 45 cm of string left.
How much string did Huan use to make his bow?
 m and cm
7. Add lengths 3 Brett is 115 cm tall.
His brother is 20 cm taller.
How tall is Brett’s brother?
1 Scott builds a bridge using planks.
120 cm 75 cm
10 cm  m and cm
25 cm
4 Dora builds a tower that measures 1 m and 5 cm.
Annie builds a tower that measures 80 cm.
a) What is the total length of his bridge? cm
Dexter builds a tower that measures 95 cm.
They put their towers together to make one high tower.
How tall is their new tower?
b) What is the height of his bridge? cm
a) 25 cm + 75 cm = m
b) 10 cm + 50 mm = cm The new tower is cm tall.
c) 1 m 20 cm + cm = 2 m
This is the same as m and cm.
d) 52 mm + mm = 6 cm
8. 5 Red bricks are 50 mm long.
6 Jack, Tommy and Alex took part in a hop, skip and
Blue bricks are 80 mm long. jump competition.
Their distances are shown in the table below.
Complete the table to show the total distance each
50 mm 80 mm child travelled.
a) Whitney and Eva make patterns using the bricks. Name Hop Skip Jump Total
How long is each pattern? Jack 80 cm 60 cm 1 m 20 cm
Give your answers in centimetres. Tommy 70 cm 1m 1 m 10 cm
Alex 75 cm 75 cm 1m
7 Esther builds a tower using some bricks.
Her tower is 24 cm tall.
Whitney Eva Which bricks could she have used?
Whitney’s pattern is cm long.
120 mm A 8 cm C
Eva’s pattern is cm long.
b) Draw some red and blue bricks to make a pattern that
would be exactly 36 cm long.
40 mm B 6 cm D
How many different answers can you find?