1. Percentages of Amounts
Level 5
23/08/2012
Learning Objectives:
Able to convert a percentage into a fraction
Able to find a percentage of an amount
without a calculator
with a calculator

2. Percentages of Amounts
What are the following equivalent to as a fraction?
100%
75%
10%
25%
17% 5%
20%

3. Percentages of Amounts
To find a percentage of an amount:
Turn the percentage into a fraction
Calculate a fraction of an amount as before
Find 50% of 60
What is 50% as a fraction?

4. Percentages of Amounts
Calculate 50% of 28
Calculate 25% of 32
Calculate 10% of 37

5. Percentages of Amounts
Calculate 20% of 60
Calculate 70% of 40
Calculate 19% of 124

6. Starter Write the following as fractions in their simplest form:
50% 25% 20%
Convert the following percentages into fractions. Simplify if possible.
30% 15% 17%
Calculate the following:
20% of % of % of 80

7. Percentages of Amounts
Level 5
23/08/2012
Learning Objectives:
Able to convert a percentage into a fraction
Able to find a percentage of an amount
without a calculator
with a calculator

8. Percentages of Amounts
Calculate 20% of 60
Calculate 70% of 40
Calculate 19% of 124

9. Percentages of Amounts
Using a calculator, calculate:
27% of 154
81% of 296

10. Percentages of Amounts
In FA Cup matches, away teams are given 10% of a stadium’s capacity for their fans. The Emirates Stadium holds 60,200 fans. How many tickets will go to the away fans?
In a TV talent show contest, the winning contestant won 20% of the audience vote. If 1,000,000 people voted, how many votes did the winner receive?

11. Find the following without a calculator:
10% of 80
25% of 60
70% of 200
5% of 80
1% of 600
Find the following with a calculator:
20% of 65
35% of 95
23% of 69
79% of 142
99% of 327
You may use a calculator to answer the following questions:
30% of London is green land. London is 607 square miles big. How much of London is green land?
The X Factor got 47% of the audience watching TV on Saturday night. Given there was 18m people watching TV, how many were watching The X Factor?

12. Plenary Graham was offered either 2/9 or 20% of a cake weighing 450g.
Which should he choose?