Rates and Unit Rates

Front

What is a rate?

Back

A rate is a ratio that compares two different quantities, often with different units, such as miles per hour or dollars per pound.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit. For example, if you pay $8 for 1 pound of concrete, the unit rate is $8 per pound.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the total amount by the number of units. For example, if you spend $40 on 5 pounds of concrete, the unit rate is $40 ÷ 5 = $8 per pound.

Front

What is the unit rate for 6 cans of soda costing $2.40?

Back

$0.40 per can.

Front

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

Back

4 red apples to 3 green apples.

Front

What are equivalent ratios?

Back

Equivalent ratios are two or more ratios that express the same relationship between quantities. For example, 1:2 and 2:4 are equivalent ratios.

Front

What is the relationship between rates and unit rates?

Back

Both rates and unit rates compare two different quantities, but a unit rate specifically refers to a rate where the second quantity is one unit.

Front

If a car travels 150 miles in 3 hours, what is the unit rate in miles per hour?

Back

50 miles per hour.

Front

What is the cost of 1 pound of concrete if 5 pounds cost $40?

Back

$8 per pound.

Front

What is another name for equivalent ratios?

Back

Equivalent fractions.