Ratios and Equivalent Ratios

Front

What is a ratio?

Back

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

Front

How can you write a ratio?

Back

Ratios can be written in several ways: as fractions (e.g., 2/5), with a colon (e.g., 2:5), or in word form (e.g., '2 to 5').

Front

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

Back

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

Front

If there are 10 soccer players and 3 coaches, what is the ratio of coaches to players?

Back

The ratio of coaches to players is 3:10.

Front

What is the ratio of red apples to green apples if there are 4 red apples and 3 green apples?

Back

The ratio of red apples to green apples is 4:3.

Front

If a bag contains 3 blue marbles, 2 red marbles, and 5 yellow marbles, what is the ratio of blue to total marbles?

Back

The total number of marbles is 10, so the ratio of blue to total marbles is 3:10.

Front

What does equivalent ratios mean?

Back

Equivalent ratios are two or more ratios that express the same relationship between quantities.

Front

If the ratio of boys to girls in a class is 2:3, how many boys are there if there are 15 girls?

Back

If there are 15 girls, then there are 10 boys (2:3 means for every 2 boys, there are 3 girls).

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 equivalent ratios?

Back

To find equivalent ratios, you can multiply or divide both terms of the ratio by the same number.