Percentages of Amounts

Percentages of Amounts

Working our % of amounts with a calculator

Working out % of an amount

• Change the % to a decimal

• For example, 17% becomes 0.17, 28% becomes 0.28, 55% becomes 0.55

• Multiply the amount by the decimal

• For example, to find 17% of 150, you do 0.17 x 150 = 25.5

​

100% in decimal format is 1. So, for example if you need to find 125% of something you would change this to 1.25.

Multiple Choice

What is 11% of 165?

• 12.5

• 18.15

• 15.5

• 17

Multiple Choice

What is 16% of 160?

• 24.6

• 25

• 25.6

• 26

Multiple Choice

What is 32% of 310?

• 98

• 99

• 99.2

• 99.6

Multiple Choice

What is 46% of 420?

• 193

• 193.1

• 193.2

• 193.3

Multiple Choice

What is 87% of 500 ?

• 425

• 430

• 435

• 440

Multiple Choice

What is 125% of 650 ?

• 675

• 754

• 800.25

• 812.5