Review Chapter 5 Test Ratios, Rates, and Proportions

Front

What is a ratio?

Back

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

Front

List the three ways to write a ratio.

Back

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity of one. For example, if 35 diapers cost $6.99, the unit rate is the cost per diaper.

Front

How do you find the unit rate from a total cost and quantity?

Back

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other is constant.

Front

How can you tell if a table represents a proportional relationship?

Back

A table represents a proportional relationship if the ratios of corresponding values are equal.

Front

Calculate the price per gallon if it costs $46.80 to fill a 13-gallon tank.

Back

Front

What is the formula for finding a ratio?

Back

The formula for finding a ratio is: Ratio = Quantity 1 : Quantity 2.

Front

What does it mean if a ratio is simplified?

Back

A simplified ratio means that the quantities have been reduced to their smallest whole number form.

Front

If a recipe calls for a ratio of 2:3 of sugar to flour, how much sugar is needed for 9 cups of flour?

Back

To find the amount of sugar needed, set up the ratio: 2/3 = x/9. Solving gives x = 6 cups of sugar.