Finding Percent of a Number Mentally

What fraction is equivalent to 25%?

• 1/5

• 1/4

• 1/2

• 1/8

Which fraction represents 80%?

• 4/5

• 1/2

• 3/4

• 2/3

What is 75% of 24?

• 16

• 22

• 18

• 20

How do you find 10% of a number mentally?

• Move the decimal point one place to the left

• Move the decimal point two places to the left

• Multiply by 0.1

• Divide by 10

To find 1% of a number, how many places do you move the decimal point?

• Two places to the right

• One place to the right

• Two places to the left

• One place to the left

If Hannah has a coupon for 20% off a $110 purchase, how much will she save?

• $18

• $22

• $20

• $24

How do you find 20% of a number if you know 10%?

• Multiply the 10% value by 2

• Divide the 10% value by 2

• Add 10% to the original number

• Subtract 10% from the original number

What is the estimated value of 26% of 64?

• 14

• 20

• 18

• 16

If Mr. Williams wants to tip 15% on a $60 bill, what is a reasonable tip amount?

• $9

• $15

• $12

• $6

What is the estimated value of 39% of 81?

• 36

• 32

• 30

• 34