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Percent

1
Percents, Decimals, and Fractions

Problem 1

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

$33\%$
$6\%$
$160\%$

Choose instructor to watch:

Mrs. Mooney

Preston

Stephanie

Edwin

Problem 2

Change $35.2\%$ to a decimal.

Choose instructor to watch:

Preston

Stephanie

Edwin

Problem 3

Write each percent as a decimal.

$37\%$
$68\%$
$120\%$
$0.8\%$

Choose instructor to watch:

Preston

Stephanie

Edwin

Problem 4

Change $0.5\%$ to a decimal.

Choose instructor to watch:

Julieta

Preston

Stephanie

Edwin

Problem 5

Write each decimal as a percent.

$0.27$
$4.89$
$0.5$
$0.09$

Choose instructor to watch:

Julieta

Preston

Stephanie

Edwin

Problem 6

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

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Stephanie

Nathan

Edwin

Problem 7

Write each percent as a fraction in lowest terms.

$19\%$
$45\%$
$36\%$

Choose instructor to watch:

Julieta

Preston

Stephanie

Edwin

Problem 8

Change $4.5\%$ to a fraction.

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Stephanie

Aaron

Edwin

Problem 9

Change $32\frac{1}{2}\%$ to a fraction.

Choose instructor to watch:

Katrina

Nathan

Julieta

Problem 10

Change $\dfrac{7}{10}$ to a percent.

Choose instructor to watch:

Mrs. Mooney

Stephanie

Aaron

Edwin

Problem 11

Change $\dfrac{3}{8}$ to a percent.

Choose instructor to watch:

Nathan

Stephanie

Gordon

Edwin

Problem 12

Change $\dfrac{5}{12}$ to a percent.

Choose instructor to watch:

Stephanie

Aaron

Edwin

Problem 13

Change $2\frac{1}{2}$ to a percent.

Choose instructor to watch:

Gordon

Stephanie

Mrs. Mooney

Edwin

2
Basic Percent Problems

Problem 1

What number is $15\%$ of $63$?

Choose instructor to watch:

Mr. McKeague

Stephanie

Nathan

David

Problem 2

What percent of $42$ is $21$?

Choose instructor to watch:

Mr. McKeague

Stephanie

Aaron

David

Problem 3

$25$ is $40\%$ of what number?

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Mr. McKeague

Nathan

David

Problem 4

What number is $43.5\%$ of $25$?

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Katrina

Aaron

David

Problem 5

What percent of $78$ is $31.9$?

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Katherine

Katrina

Nathan

David

Problem 6

$34$ is $29\%$ of what number?

Choose instructor to watch:

Katherine

Katrina

Aaron

David

Problem 7

Application. See text.

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Katherine

Katrina

Gordon

Problem 8

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

Choose instructor to watch:

Mr. McKeague

Katrina

Aaron

Edwin

Problem 9

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

Choose instructor to watch:

Mr. McKeague

Katrina

Gordon

Julieta

Problem 10

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

Choose instructor to watch:

Mr. McKeague

Katrina

Aaron

Edwin

3
General Applications of Percent

Problem 1

Choose instructor to watch:

Mr. McKeague

Arielle

Anthony

David

Problem 2

Choose instructor to watch:

Mr. McKeague

Aaron

David

Problem 3

Choose instructor to watch:

Mr. McKeague

Anthony

Arielle

David

Problem 4

Choose instructor to watch:

Mr. McKeague

Arielle

Anthony

David

Problem 5

Choose instructor to watch:

Katherine

Logan

Octabio

4
Sales Tax and Commission

Problem 1

Choose instructor to watch:

Arielle

Anthony

David

Problem 2

Choose instructor to watch:

Gordon

Arielle

Nathan

Edwin

Problem 3

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

Choose instructor to watch:

Katherine

Katrina

Aaron

Julieta

Problem 4

Choose instructor to watch:

Katherine

Katrina

Nathan

Edwin

Problem 5

Choose instructor to watch:

Katherine

Katrina

Aaron

Problem 6

Choose instructor to watch:

Nathan

Katrina

Gordon

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

Aaron

Edwin

Problem 2

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

Choose instructor to watch:

Katherine

Logan

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

Aaron

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?

Choose instructor to watch:

Katherine

Gordon

Nathan

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

Stephanie

Aaron

Edwin

6
Interest

Problem 1

Choose instructor to watch:

Katherine

Octabio

Julieta

Problem 2

Choose instructor to watch:

Katherine

Logan

Octabio

Problem 3

Choose instructor to watch:

Betsy

Aaron

Edwin

Problem 4

Choose instructor to watch:

Katherine

Octabio

Problem 5

Choose instructor to watch:

Katherine

Logan

Octabio

Problem 6

Choose instructor to watch:

Betsy

Gordon

Edwin

7
Test Yourself!

Problem 1

Write as a decimal: $18\%$

Choose instructor to watch:

Richard

Problem 2

Write as a decimal: $4\%$

Choose instructor to watch:

Richard

Problem 3

Write as a decimal: $0.5\%$

Choose instructor to watch:

Richard

Problem 4

Write as a percent: 0.45

Choose instructor to watch:

Richard

Problem 5

Write as a percent:$0.7$

Choose instructor to watch:

Richard

Problem 6

Write as a percent:$1.35$

Choose instructor to watch:

Richard

Problem 7

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

Choose instructor to watch:

Richard

Problem 8

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

Choose instructor to watch:

Richard

Problem 9

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

Choose instructor to watch:

Richard

Lauren

Gordon

Problem 10

Write as a percent:$\displaystyle\frac{7}{20}$

Choose instructor to watch:

Richard

Lauren

Gordon

Problem 11

Write as a percent:$\displaystyle\frac{3}{8}$

Choose instructor to watch:

Richard

Lauren

Gordon

Problem 12

Write as a percent:1$\displaystyle\frac{3}{4}$

Choose instructor to watch:

Richard

Lauren

Gordon

Problem 13

What number is $75\%$ of 60?

Choose instructor to watch:

Richard

Lauren

Gordon

Problem 14

What percent of 40 is 18?

Choose instructor to watch:

Richard

Lauren

Gordon

Problem 15

$16$ is $20\%$ of what number?

Choose instructor to watch:

Richard

Lauren

Problem 16

On a driverâ€™s test, a student answered $23$ questions correctly on a $25$-question test. What percent of the questions did the student answer correctly?

Choose instructor to watch:

Richard

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?

Choose instructor to watch:

Richard

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

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

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?

Choose instructor to watch:

Richard

Lauren

CHOOSE A TOPIC

1 Percents, Decimals, and Fractions

2 Basic Percent Problems

3 General Applications of Percent

4 Sales Tax and Commission

5 Percent Increase or Decrease and Discount

6 Interest

7 Test Yourself!

1
Percents, Decimals, and Fractions

2
Basic Percent Problems

3
General Applications of Percent

4
Sales Tax and Commission

5
Percent Increase or Decrease and Discount

6
Interest

7
Test Yourself!