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 3 apples for $6, the unit rate is $2 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, the unit rate is 408 words ÷ 4 minutes = 102 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

What is the formula for finding a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

How can a ratio be expressed?

Back

A ratio can be expressed in three ways: as a fraction (3/4), with a colon (3:4), or in words (3 to 4).

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

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

Back

$1.40.

Front

What is the ratio of red apples to green apples if there are 4 red apples and 3 green apples?

Back

4 to 3.