Ratios

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

How can ratios be expressed?

Back

Ratios can be expressed in three ways: 1) a:b, 2) a to b, 3) a/b.

Front

What is the ratio of red to yellow marbles if there are 2 red and 5 yellow?

Back

The ratio of red to yellow marbles is 2:5.

Front

Which of the following is NOT equivalent to 3:5? 15:25, 9:15, 21:28, 30:50

Back

21:28 is NOT equivalent to 3:5.

Front

If you travel 150 miles on 5 gallons, how far do you travel per gallon?

Back

You travel 30 miles per gallon.

Front

If there are 10 girls for every 12 boys, how many boys are there if there are 50 girls?

Back

If there are 50 girls, there are 60 boys.

Front

What is the simplest form of the ratio 8:12?

Back

The simplest form of the ratio 8:12 is 2:3.

Front

How do you find an equivalent ratio?

Back

To find an equivalent ratio, multiply or divide both terms of the ratio by the same non-zero number.

Front

What is a part-to-part ratio?

Back

A part-to-part ratio compares different parts of a whole, such as the ratio of boys to girls in a class.

Front

What is a part-to-whole ratio?

Back

A part-to-whole ratio compares a part to the entire group, such as the ratio of girls to the total number of students.