Unit Rates

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as a quantity of one. For example, if you can buy 4 apples for $2, the unit rate is $0.50 per apple.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity of one item by the quantity of the other item. For example, if you can type 408 words in 4 minutes, divide 408 by 4 to find the unit rate of words per minute.

Front

If Justin can type 408 words in 4 minutes, what is his unit rate?

Back

102 words per minute.

Front

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

Back

$8 per pound.

Front

Juju bought 5 books for $7. How much does one book cost?

Back

$1.40.

Front

You can buy 36 cookies for $4. What is the unit rate in cookies per dollar?

Back

9 cookies per dollar.

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second. It can be expressed in three ways: a fraction, with a colon, or with the word 'to'.

Front

Which of the following is NOT a way to write a ratio: 3=4, 3:4, 3/4, 3 to 4?

Back

3=4 is NOT a way to write a ratio.

Front

What is the unit rate of 60 miles in 2 hours?

Back

30 miles per hour.

Front

If a car travels 150 miles on 5 gallons of gas, what is the unit rate in miles per gallon?

Back

30 miles per gallon.