Percent Proportion Find Percent

What is 35% as a decimal?

• 68%

• 75%

• 85%

• 0.85%

What number is 40% of 80?

• 30

• 32

• 320

• 40

What number is 17% of 50?

12 is 40% of what number?

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%

An archaeologist estimated that a fossil was 520 years old. It was actually 500 years old. What was the percent error?

• 4%

• 20%

• 3.8%

• none of these