Rate/Unit Rate

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to one unit of another quantity.

Front

If a car travels 120 miles in 2 hours, what is the unit rate in miles per hour?

Back

60 miles per hour.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

Which of the following is a correct way to write a ratio? X : Y, X/Y, or X to Y?

Back

All of these are correct ways to write a ratio.

Front

If a recipe calls for 4 cups of flour for 2 cakes, what is the unit rate of flour per cake?

Back

2 cups of flour per cake.

Front

What is the difference between a rate and a ratio?

Back

A rate is a specific kind of ratio that compares two quantities with different units, while a ratio compares two quantities with the same unit.

Front

If a person earns $300 for 15 hours of work, what is the unit rate in dollars per hour?

Back

$20 per hour.

Front

What is the unit rate of 45 miles in 3 hours?

Back

15 miles per hour.

Front

If a car uses 10 gallons of gas to travel 250 miles, what is the unit rate in miles per gallon?

Back

25 miles per gallon.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.