Ratios and Equivalent Ratios

Front

What is a Ratio?

Back

A ratio is a comparison of two quantities.

Front

What is an Equivalent Ratio?

Back

Equivalent ratios are ratios that express the same relationship between numbers, even if the numbers themselves are different.

Front

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

Back

4 red apples to 3 green apples.

Front

How do you find an equivalent ratio for 4:12?

Back

To find an equivalent ratio, you can divide both numbers by the same non-zero number. For example, dividing by 2 gives you 2:6.

Front

What is the ratio of pears to apples if there are 5 pears and 4 apples?

Back

5:4.

Front

If you have a ratio of 8:20, will dividing both numbers by 2 give you an equivalent ratio?

Back

Yes.

Front

What is the first step to simplify the ratio 12:16?

Back

Divide both numbers by their greatest common divisor, which is 4, to get 3:4.

Front

If a recipe calls for a ratio of 2 cups of flour to 3 cups of sugar, what is the equivalent ratio for 4 cups of flour?

Back

6 cups of sugar (4:6).

Front

What does it mean if two ratios are in proportion?

Back

It means that the two ratios are equivalent.

Front

If the ratio of boys to girls in a class is 3:5, how many boys are there if there are 15 girls?

Back

9 boys (3:5 means for every 3 boys, there are 5 girls).