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Math Fundamentals
Percent

1
Percents, Decimals, and Fractions

Problem  1
practice icon

Write each percent as a fraction with a denominator of 100.

  1. 33%

  2. 6%

  3. 160%

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Mrs. Mooney cc
Mrs. Mooney
Preston cc
Preston
Stephanie cc
Stephanie
Edwin cc espanol spanish
Edwin
Problem  2
practice icon

Change 35.2% to a decimal.

Choose instructor to watch:
Preston cc
Preston
Stephanie cc
Stephanie
Edwin cc espanol spanish
Edwin
Problem  3
practice icon

Write each percent as a decimal.

  1. 37%

  2. 68%

  3. 120%

  4. 0.8%

Choose instructor to watch:
Preston cc
Preston
Stephanie cc
Stephanie
Edwin cc espanol spanish
Edwin
Problem  4
practice icon

Change 0.5% to a decimal.

Choose instructor to watch:
Julieta cc
Julieta
Preston cc
Preston
Stephanie cc
Stephanie
Edwin cc espanol spanish
Edwin
Problem  5
practice icon

Write each decimal as a percent.

  1. 0.27

  2. 4.89

  3. 0.5

  4. 0.09

Choose instructor to watch:
Julieta cc
Julieta
Preston cc
Preston
Stephanie cc
Stephanie
Edwin cc espanol spanish
Edwin
Problem  6
practice icon

A softball player has a batting average of 0.650. Write this number as a percent.

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Stephanie cc
Stephanie
Nathan cc
Nathan
Edwin cc espanol spanish
Edwin
Problem  7
practice icon

Write each percent as a fraction in lowest terms.

  1. 19%

  2. 45%

  3. 36%

Choose instructor to watch:
Julieta cc
Julieta
Preston cc
Preston
Stephanie cc
Stephanie
Edwin cc espanol spanish
Edwin
Problem  8
practice icon

Change 4.5% to a fraction.

Choose instructor to watch:
Stephanie cc
Stephanie
Aaron cc
Aaron
Edwin cc espanol spanish
Edwin
Problem  9
practice icon

Change 3212% to a fraction.

Choose instructor to watch:
Katrina cc
Katrina
Nathan cc
Nathan
Julieta cc espanol spanish
Julieta
Problem  10
practice icon

Change 710 to a percent.

Choose instructor to watch:
Mrs. Mooney cc
Mrs. Mooney
Stephanie cc
Stephanie
Aaron cc
Aaron
Edwin cc espanol spanish
Edwin
Problem  11
practice icon

Change 38 to a percent.

Choose instructor to watch:
Nathan cc
Nathan
Stephanie cc
Stephanie
Gordon cc
Gordon
Edwin cc espanol spanish
Edwin
Problem  12
practice icon

Change 512 to a percent.

Choose instructor to watch:
Stephanie cc
Stephanie
Aaron cc
Aaron
Edwin cc espanol spanish
Edwin
Problem  13
practice icon

Change 212 to a percent.

Choose instructor to watch:
Gordon cc
Gordon
Stephanie cc
Stephanie
Mrs. Mooney cc
Mrs. Mooney
Edwin cc espanol spanish
Edwin

2
Basic Percent Problems

Problem  1
practice icon

What number is 15% of 63?

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Stephanie cc
Stephanie
Nathan cc
Nathan
David cc espanol spanish
David
Problem  2
practice icon

What percent of 42 is 21?

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Mr. McKeague cc
Mr. McKeague
Stephanie cc
Stephanie
Aaron cc
Aaron
David cc espanol spanish
David
Problem  3
practice icon

25 is 40% of what number?

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Mr. McKeague cc
Mr. McKeague
Nathan cc
Nathan
David cc espanol spanish
David
Problem  4
practice icon

What number is 43.5% of 25?

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Katrina cc
Katrina
Aaron cc
Aaron
David cc espanol spanish
David
Problem  5
practice icon

What percent of 78 is 31.9?

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Katherine cc
Katherine
Katrina cc
Katrina
Nathan cc
Nathan
David cc espanol spanish
David
Problem  6
practice icon

34 is 29% of what number?

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Katherine cc
Katherine
Katrina cc
Katrina
Aaron cc
Aaron
David cc espanol spanish
David
Problem  7
practice icon

Application. See text.

Choose instructor to watch:
Katherine cc
Katherine
Katrina cc
Katrina
Gordon cc
Gordon
Problem  8
practice icon

What number is 15% of 63? (Use proportions.)

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Mr. McKeague cc
Mr. McKeague
Katrina cc
Katrina
Aaron cc
Aaron
Edwin cc espanol spanish
Edwin
Problem  9
practice icon

What percent of 42 is 21? (Use proportions.)

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Mr. McKeague cc
Mr. McKeague
Katrina cc
Katrina
Gordon cc
Gordon
Julieta cc espanol spanish
Julieta
Problem  10
practice icon

25 is 40% of what number? (Use proportions.)

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Mr. McKeague cc
Mr. McKeague
Katrina cc
Katrina
Aaron cc
Aaron
Edwin cc espanol spanish
Edwin

3
General Applications of Percent

Problem  1
Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Arielle cc
Arielle
Anthony cc
Anthony
David cc espanol spanish
David
Problem  2
Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Aaron cc
Aaron
David cc espanol spanish
David
Problem  3
Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Anthony cc
Anthony
Arielle cc
Arielle
David cc espanol spanish
David
Problem  4
Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Arielle cc
Arielle
Anthony cc
Anthony
David cc espanol spanish
David
Problem  5
Choose instructor to watch:
Katherine cc
Katherine
Logan cc
Logan
Octabio espanol spanish
Octabio

4
Sales Tax and Commission

Problem  1
practice icon
Choose instructor to watch:
Arielle cc
Arielle
Anthony cc
Anthony
David cc espanol spanish
David
Problem  2
Choose instructor to watch:
Gordon cc
Gordon
Arielle cc
Arielle
Nathan cc
Nathan
Edwin cc espanol spanish
Edwin
Problem  3
practice icon

Suppose the purchase price of a stereo system is $396 and the sales tax is $19.80. What is the sales tax rate?

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Katherine cc
Katherine
Katrina cc
Katrina
Aaron cc
Aaron
Julieta cc espanol spanish
Julieta
Problem  4
Choose instructor to watch:
Katherine cc
Katherine
Katrina cc
Katrina
Nathan cc
Nathan
Edwin cc espanol spanish
Edwin
Problem  5
Choose instructor to watch:
Katherine cc
Katherine
Katrina cc
Katrina
Aaron cc
Aaron
Problem  6
Choose instructor to watch:
Nathan cc
Nathan
Katrina cc
Katrina
Gordon cc
Gordon
Edwin cc espanol spanish
Edwin

5
Percent Increase or Decrease and Discount

Problem  1

If a person earns $22,000 a year and gets a 5% increase in salary, what is the new salary?

Choose instructor to watch:
Katrina cc
Katrina
Aaron cc
Aaron
Edwin cc espanol spanish
Edwin
Problem  2

Use the information in the bar chart to find the percent increase in iPhone sales from 2011 to 2012.

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Katherine cc
Katherine
Logan cc
Logan
Octabio espanol spanish
Octabio
Problem  3

Shoes that usually sell for $25 are on sale for $21. What is the percent decrease in price?

Choose instructor to watch:
Katrina cc
Katrina
Aaron cc
Aaron
Edwin cc espanol spanish
Edwin
Problem  4

During a clearance sale, a suit that usually sells for $300 is marked "25% off." What is the discount price? What is the sale price?

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Katherine cc
Katherine
Gordon cc
Gordon
Nathan cc
Nathan
Julieta espanol spanish
Julieta
Problem  5

A washing machine usually sells for $450, but it is on sale at 12% off. If the sales tax rate is 5%, what is the total cost of the washer?

Choose instructor to watch:
Katherine cc
Katherine
Stephanie cc
Stephanie
Aaron cc
Aaron
Edwin espanol spanish
Edwin

6
Interest

Problem  1
Choose instructor to watch:
Katherine cc
Katherine
Octabio cc
Octabio
Julieta cc espanol spanish
Julieta
Problem  2
Choose instructor to watch:
Katherine cc
Katherine
Logan cc
Logan
Octabio espanol spanish
Octabio
Problem  3
Choose instructor to watch:
Betsy cc
Betsy
Aaron cc
Aaron
Edwin espanol spanish
Edwin
Problem  4
Choose instructor to watch:
Katherine cc
Katherine
Octabio cc
Octabio
Octabio espanol spanish
Octabio
Problem  5
Choose instructor to watch:
Katherine cc
Katherine
Logan cc
Logan
Octabio espanol spanish
Octabio
Problem  6
Choose instructor to watch:
Betsy cc
Betsy
Gordon
Gordon
Edwin espanol spanish
Edwin

7
Test Yourself!

Problem  1

Write as a decimal: 18%

Choose instructor to watch:
Richard cc
Richard
Problem  2

Write as a decimal: 4%

Choose instructor to watch:
Richard cc
Richard
Problem  3

Write as a decimal: 0.5%

Choose instructor to watch:
Richard cc
Richard
Problem  4

Write as a percent: 0.45

Choose instructor to watch:
Richard cc
Richard
Problem  5

Write as a percent:0.7

Choose instructor to watch:
Richard cc
Richard
Problem  6

Write as a percent:1.35

Choose instructor to watch:
Richard cc
Richard
Problem  7

Write as a fraction or mixed number in lowest terms:65%

Choose instructor to watch:
Richard cc
Richard
Problem  8

Write as a fraction or mixed number in the lowest terms:146%

Choose instructor to watch:
Richard cc
Richard
Problem  9

Write as a fraction or mixed number in lowest terms:3.5%

Choose instructor to watch:
Richard cc
Richard
Lauren cc
Lauren
Gordon espanol spanish
Gordon
Problem  10

Write as a percent:720

Choose instructor to watch:
Richard cc
Richard
Lauren cc
Lauren
Gordon espanol spanish
Gordon
Problem  11

Write as a percent:38

Choose instructor to watch:
Richard cc
Richard
Lauren cc
Lauren
Gordon espanol spanish
Gordon
Problem  12

Write as a percent:134

Choose instructor to watch:
Richard cc
Richard
Lauren cc
Lauren
Gordon espanol spanish
Gordon
Problem  13

What number is 75% of 60?

Choose instructor to watch:
Richard cc
Richard
Lauren cc
Lauren
Gordon espanol spanish
Gordon
Problem  14

What percent of 40 is 18?

Choose instructor to watch:
Richard cc
Richard
Lauren cc
Lauren
Gordon espanol spanish
Gordon
Problem  15

16 is 20% of what number?

Choose instructor to watch:
Richard cc
Richard
Lauren cc
Lauren
Problem  16

On a driver’s test, a student answered 23 questions correctly on a 25-question test. What percent of the questions did the student answer correctly?

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Richard cc
Richard
Lauren cc
Lauren
Problem  17

A salesperson gets an 8% commission rate on all computers she sells. If she sells $12,000 computers in 1 day, what is her commission?

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Richard cc
Richard
Lauren cc
Lauren
Problem  18

A tennis racket that normally sells for $280 is on sales for 25% off. If the sales rate is 5%, what is the total price of the tennis racket if it is purchased during the sale?

Choose instructor to watch:
Richard cc
Richard
Lauren cc
Lauren
Problem  19

If 5,000 is invested at 8% simple interest for 3 months, how much interest is earned?

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Richard cc
Richard
Lauren cc
Lauren
Problem  20

How much interest will be earned on a savings account that pays 10% compounded annually if $12,000 is invested for 2 years?

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Richard cc
Richard
Lauren cc
Lauren