Percentage of Number Worksheet

Calculate the percentages.

 1 a. 40%  of  20
 1 b. 70%  of  80
 2 a. 80%  of  30
 2 b. 100%  of  30
 3 a. 40%  of  40
 3 b. 80%  of  0
 4 a. 10%  of  20
 4 b. 100%  of  40
 5 a. 90%  of  100
 5 b. 20%  of  40
 6 a. 20%  of  80
 6 b. 100%  of  70
 7 a. 50%  of  80
 7 b. 90%  of  20
 8 a. 20%  of  60
 8 b. 20%  of  100
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# Answer Key

Answers are rounded to 3 decimals.

1 a.
 40% of 20 is 8 0.4 × 20 = 8
1 b.
 70% of 80 is 56 0.7 × 80 = 56
2 a.
 80% of 30 is 24 0.8 × 30 = 24
2 b.
 100% of 30 is 30 1 × 30 = 30
3 a.
 40% of 40 is 16 0.4 × 40 = 16
3 b.
 80% of 0 is 0 0.8 × 0 = 0
4 a.
 10% of 20 is 2 0.1 × 20 = 2
4 b.
 100% of 40 is 40 1 × 40 = 40
5 a.
 90% of 100 is 90 0.9 × 100 = 90
5 b.
 20% of 40 is 8 0.2 × 40 = 8
6 a.
 20% of 80 is 16 0.2 × 80 = 16
6 b.
 100% of 70 is 70 1 × 70 = 70
7 a.
 50% of 80 is 40 0.5 × 80 = 40
7 b.
 90% of 20 is 18 0.9 × 20 = 18
8 a.
 20% of 60 is 12 0.2 × 60 = 12
8 b.
 20% of 100 is 20 0.2 × 100 = 20

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