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Ratio and Proportion: Reading a Pie Chart (1)

In this worksheet, students read information from a pie chart and answer questions about it.

'Ratio and Proportion: Reading a Pie Chart (1)' worksheet

Key stage:  KS 2

Curriculum topic:  Statistics

Curriculum subtopic:  Use Charts and Graphs

Difficulty level:  

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Worksheet Overview

QUESTION 1 of 10

Pie charts are based on fractions of 360°.

The fractions can be worked out from the angles at the centre of the chart.

 

Crisp pie chart

 

This pie chart shows the results of a survey on favourite crisp flavours.

 

The Salt and Vinegar sector shows 36° which is 36/360 of the whole circle (i.e. 1/10).

 

Now we need a hard fact, such as the actual number who chose Salt and Vinegar or the total number in the survey.

 

Example 1

If 15 people chose Salt and Vinegar, how many people took part in the survey?

 

Answer

15 people are shown in 1/10 of the circle, so there must be 10 x 15 = 150 people in total.

 

 

Example 2

If 40 people took the survey, how many people chose Salt and Vinegar?

 

Answer

We need to work out 1/10 of 40 = 4, so 4 people chose Salt and Vinegar.

This pie chart shows the results of a survey on favourite crisp flavours.  

40 people took part in the survey.

How many chose Ready Salted?

 

 Crisp pie chart

This pie chart shows the results of a survey on favourite crisp flavours.  

80 people took part in the survey.

How many chose Ready Salted?

 

 Crisp pie chart

This pie chart shows the results of a survey on favourite crisp flavours.

80 people took part in the survey.

How many chose Prawn Cocktail?

 

 Crisp pie chart

This pie chart shows the results of a survey on favourite crisp flavours.  

40 people took part in the survey.

How many chose Salt and Vinegar?

 

 Crisp pie chart

This pie chart shows the results of a survey on favourite crisp flavours.  

44 people took part in the survey.

How many chose Cheese and Onion?

 

 Crisp pie chart

This pie chart shows the results of a survey on favourite crisp flavours.  

100 people took part in the survey.

How many chose Ready Salted?

 

 Crisp pie chart

This pie chart shows the results of a survey on favourite crisp flavours.  

200 people took part in the survey.

How many chose Cheese and Onion?

 

 Crisp pie chart

This pie chart shows the results of a survey on favourite crisp flavours.  

200 people chose Cheese and Onion.

How many took part in the survey?

 

 Crisp pie chart

This pie chart shows the results of a survey on favourite crisp flavours.  

50 people chose Ready Salted.

How many in total were in the survey?

 

 Crisp pie chart

This pie chart shows the results of a survey on favourite crisp flavours.  

20 people chose Prawn Cocktail.

How many chose Cheese and Onion?

 

 Crisp pie chart

  • Question 1

This pie chart shows the results of a survey on favourite crisp flavours.  

40 people took part in the survey.

How many chose Ready Salted?

 

 Crisp pie chart

CORRECT ANSWER
10
EDDIE SAYS
1/4 of the pie chart is Ready Salted, so 1/4 of 40 = 10.
  • Question 2

This pie chart shows the results of a survey on favourite crisp flavours.  

80 people took part in the survey.

How many chose Ready Salted?

 

 Crisp pie chart

CORRECT ANSWER
20
EDDIE SAYS
1/4 of the pie chart is Ready Salted, so 1/4 of 80 = 20.
  • Question 3

This pie chart shows the results of a survey on favourite crisp flavours.

80 people took part in the survey.

How many chose Prawn Cocktail?

 

 Crisp pie chart

CORRECT ANSWER
10
EDDIE SAYS
1/8 of the pie chart is Prawn Cocktail, so 1/8 of 80 = 10.
  • Question 4

This pie chart shows the results of a survey on favourite crisp flavours.  

40 people took part in the survey.

How many chose Salt and Vinegar?

 

 Crisp pie chart

CORRECT ANSWER
5
EDDIE SAYS
1/8 of the pie chart is Salt and Vinegar, so 1/8 of 40 is 5.
  • Question 5

This pie chart shows the results of a survey on favourite crisp flavours.  

44 people took part in the survey.

How many chose Cheese and Onion?

 

 Crisp pie chart

CORRECT ANSWER
22
EDDIE SAYS
1/2 of the pie chart is Cheese and Onion, so 1/2 of 44 is 22.
  • Question 6

This pie chart shows the results of a survey on favourite crisp flavours.  

100 people took part in the survey.

How many chose Ready Salted?

 

 Crisp pie chart

CORRECT ANSWER
25
EDDIE SAYS
1/4 of the pie chart is Ready Salted, so 1/4 of 100 is 25.
  • Question 7

This pie chart shows the results of a survey on favourite crisp flavours.  

200 people took part in the survey.

How many chose Cheese and Onion?

 

 Crisp pie chart

CORRECT ANSWER
100
EDDIE SAYS
1/2 of the pie chart is Cheese and Onion, so 1/2 of 200 is 100.
  • Question 8

This pie chart shows the results of a survey on favourite crisp flavours.  

200 people chose Cheese and Onion.

How many took part in the survey?

 

 Crisp pie chart

CORRECT ANSWER
400
EDDIE SAYS
If 200 people chose Cheese and Onion and that's half of the pie chart, then 1/4 chose Ready Salted which is 100 people, and 1/4 chose Prawn Cocktail and Salt and Vinegar which is 100 people also. 200 + 100 + 100 = 400 people took part in the survey.
  • Question 9

This pie chart shows the results of a survey on favourite crisp flavours.  

50 people chose Ready Salted.

How many in total were in the survey?

 

 Crisp pie chart

CORRECT ANSWER
200
EDDIE SAYS
1/4 of the people, or 50, chose Ready Salted, so 50 chose Prawn Cocktail and Salt and Vinegar, while 100 people chose Cheese and Onion. Altogether, 50 + 50 + 100 = 200 people took the survey.
  • Question 10

This pie chart shows the results of a survey on favourite crisp flavours.  

20 people chose Prawn Cocktail.

How many chose Cheese and Onion?

 

 Crisp pie chart

CORRECT ANSWER
80
EDDIE SAYS
If 20 people chose Prawn Cocktail, and that's 1/8 of the pie chart, then 4/8 chose Cheese and Onion, which is 20 + 20 + 20 + 20 = 80.
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