Percent of a Number Using Proportion

Calculate 25% of 80

• 20

• 80

• 48

• 95

Which of these proportional equations would you use to find the missing pieces of a percent problem, using the words "OF and IS"?

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There are 9 students in a classroom that play football, this is 37.5% of the class. How many students are in the class?

Set up a proportion to help you solve this problem.

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What is 30% of 50?

• 16

• 16.3

• 17.4

• 15

• A
• B
• C
• D

Nyla took a math test and got 12 correct and 3 incorrect answers.

Which proportion shows how you could find the percent of wrong answers?

(Hint: 12 correct and 3 incorrect answers makes 15 total.)

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Match the following: For Percent Proportions

• of

• right denominator

• 100

• right numerator

• percent

• left denominator

• is

• left

  numerator

Pacino worked 8 hours out of the day.

Which proportion could you use to find the percent of the day he was working?

(Hint: There are 24 hours in a day.)

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In a percent proportion, One ratio compares a ​ (a)   of a quantity to the ​ (b)   .

• part

• whole

• proportion

• percent

• ratio

Pacino worked 8 hours out of the day. What percent of the day did he work?

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