5.1-5.4 Test Review

Front

Write the ratio of 15 girls to 6 boys as a fraction in simplest form.

Back

5/2

Front

Solve the proportion: If 18 is to x as 72 is to 4, what is x?

Back

x = 18

Front

Find the unit rate for 84 miles in 12 days.

Back

7 miles per day

Front

Write the ratio of 24 players to 3 teams as a fraction in simplest form.

Back

8/1

Front

Do the rates of 90 sit-ups in 2 minutes and 135 sit-ups in 3 minutes form a proportion?

Back

Yes, they form a proportion.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is 1.

Front

How do you simplify a fraction?

Back

Divide the numerator and denominator by their greatest common factor.

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

Cross-multiply and then solve for the variable.