TEST REVIEW:Introduction to Ratios, Rates, and Unit Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two quantities with different units.

Front

What is a unit rate?

Back

A unit rate is a comparison of two quantities with units when the quantity in the denominator is 1.

Front

If there are 120 boys in a group and the total is 270, how many girls are there?

Back

150 girls.

Front

If Justin can type 408 words in 4 minutes, how many words can he type per minute?

Back

102 words per minute.

Front

What does the ratio 3:8 represent in terms of girls to boys?

Back

For every 3 girls, there are 8 boys.

Front

If the ratio of girls to boys is 3:8 and there are 48 boys, how many girls are there?

Back

18 girls.

Front

What is the first step in solving a ratio problem?

Back

Identify the quantities being compared and their relationship.

Front

How do you convert a ratio to a fraction?

Back

Write the first quantity as the numerator and the second quantity as the denominator.

Front

What is the formula for finding a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.