Ratios and Proportions

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 do you write a ratio?

Back

Ratios can be written in three ways: using a colon (e.g., 3:2), as a fraction (e.g., 3/2), or in words (e.g., '3 to 2').

Front

What is a proportion?

Back

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

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common factor.

Front

What is the ratio of school apps to game apps if Kelly has 5 school apps and 3 game apps?

Back

5 to 3.

Front

If there are 5 boys and 7 girls, what is the ratio of girls to total students?

Back

7 to 12.

Front

If there are 5 ice cream cones for every 3 brownies, how many ice cream cones are sold if 24 brownies are sold?

Back

40 ice cream cones.

Front

What is the missing number in the ratio table if the ratio is 3:7 and the known number is 9?

Back

21.

Front

What is the ratio of total players to boys if a baseball team has 16 girls and 8 boys?

Back

3 to 1.

Front

How do you find equivalent ratios?

Back

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