Manipulating Percents

What number is 40% of 80?

• 30

• 32

• 320

• 40

42 is 25% of what number?

• 10.5

• 60

• 168

• 16.8

Of the 160 7th graders at CMS, 96 donate canned goods to the food drive. What percent of the 7th graders donated food?

• 60%

• 66%

• 96%

• 99%

What number is 17% of 50?

Calculate the percent increase. Round to the nearest percent.

Original: 45

New: 92

• 51%

• 1.04%

• 104%

• .51

The regular price of a scooter is $65.50. It is on sale for $52.40. What is the percent decrease from the regular price to the sale price of the scooter?

• 35%

• 25%

• 30%

• 20%

Lacey bought a new purse that originally cost $25 and is on sale for $15. Find the percent of change in the price in the purse.

• Decrease of 40%

• Decrease of 10%

• Decrease of 30%

• Decrease of 20%

The attendance for the basketball game was estimated to be 15,000 people but 12,500 people actually attended. What was the percent error?

• 16.67%

• 20%

• 2500%

• 80%

26 is 5% of what number?

• 3

• 5

• 25.95

• 520

Write .506 as a percent.

• 5.06%

• 506%

• 50.6%

• 500.6%