 # Numbers: Working Out the Percentage

In this worksheet, students work out a percentage of a number without using a calculator. Key stage:  KS 2

Curriculum topic:   Number: Fractions, Decimals and Percentages

Curriculum subtopic:   Recognise Percentages

Difficulty level:   ### QUESTION 1 of 10

In this worksheet, calculate percentages of numbers without using a calculator.

Example

Find 40% of 240.

First we find 10% of 240 by dividing 240 by 10.

240 ÷ 10 = 24.

Next we multiply this by 4 to get 40% of 240.

24 x 4 = 96.

So to summarise,

100% of 240 = 240

10% of 240 =   24

40% of 240 =   96

Find 30% of 570.

Find 40% of 20.

Find 90% of 780.

Find 70% of 300.

Find 30% of 900.

Find 40% of 130.

Find 40% of 170.

Find 60% of 330.

Find 40% of 430.

Find 80% of 810.

• Question 1

Find 30% of 570.

171
EDDIE SAYS
First find 10% of 570. 570 ÷ 10 = 57. Next multiply this by 3 to get 30% of 570. 57 x 3 = 171.
• Question 2

Find 40% of 20.

8
EDDIE SAYS
First find 10% of 20. 20 ÷ 10 = 2. Next multiply this by 4 to get 40% of 20. 2 x 4 = 8.
• Question 3

Find 90% of 780.

702
EDDIE SAYS
First find 10% of 780. 780 ÷ 10 = 78. Next multiply this by 9 to get 90% of 780. 78 x 9 = 702.
• Question 4

Find 70% of 300.

210
EDDIE SAYS
First find 10% of 300. 300 ÷ 10 = 30. Next multiply this by 7 to get 70% of 300. 30 x 7 = 210.
• Question 5

Find 30% of 900.

270
EDDIE SAYS
First find 10% of 900. 900 ÷ 10 = 90. Next multiply this by 3 to get 30% of 900. 90 x 3 = 270.
• Question 6

Find 40% of 130.

52
EDDIE SAYS
First find 10% of 130. 130 ÷ 10 = 13. Next multiply this by 4 to get 40% of 130. 13 x 4 = 52.
• Question 7

Find 40% of 170.

68
EDDIE SAYS
First find 10% of 170. 170 ÷ 10 = 17. Next multiply this by 4 to get 40% of 170. 17 x 4 = 68.
• Question 8

Find 60% of 330.

198
EDDIE SAYS
First find 10% of 330. 330 ÷ 10 = 33. Next multiply this by 6 to get 60% of 330. 33 x 6 = 198.
• Question 9

Find 40% of 430.

172
EDDIE SAYS
First find 10% of 430. 430 ÷ 10 = 43. Next multiply this by 4 to get 40% of 430. 43 x 4 = 172.
• Question 10

Find 80% of 810.

648
EDDIE SAYS
First find 10% of 810. 810 ÷ 10 = 81. Next multiply this by 8 to get 80% of 810. 81 x 8 = 648.
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