Percents and Rates per 100

Percents are always out of?

• 100

• 10

• 1

• 1000

If Jerry scored a 55% on a quiz with 100 questions, how many questions did he get correct?

• 100

• 45

• 55

• 0

• .07

• 7%

• 70%

• 700%

Re-write the percentage as a decimal.

23% = ____

• 02.30

• .023

• 0.23

• 23.00

Is a ratio that compares a number to 100.  It means "per 100" or "out of 100."

• Percent

• Ratio Table

• Unit Rate

• Rate

a rate “for every 100” or “per 100”

• vertical line

• percent

• unit rate

• expression

A _______ is a ratio that compares a number to 100.

A quarterback completed 68% of his passes in a game. He threw 25 passes. How many passes did the quarterback complete?

• 18

• 17

• 15

• 20

If 50 is 25% of a number, what is the number?

• 200

• 100

• 150

• 250

Answer explanation

To find the number, divide 50 by 25% (or 0.25). 50 ÷ 0.25 = 200. Therefore, the number is 200.

If 30% of a number is 60, what is 10% of the same number?

• 20

• 30

• 40

• 10