Equivalent Ratios

Front

What is an equivalent ratio?

Back

An equivalent ratio is a ratio that expresses the same relationship between two quantities, even if the numbers are different. For example, 1:2 and 2:4 are equivalent ratios.

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 non-zero number. For example, to find an equivalent ratio for 2:3, multiply both terms by 2 to get 4:6.

Front

Which ratio is equivalent to 5 to 4?

Back

25 to 20 is equivalent to 5 to 4.

Front

Which of the following ratios are NOT equivalent to 20:24?

Back

16:20 is NOT equivalent to 20:24.

Front

For a recipe, if Brutus uses 4 cups of sugar for every 5 cups of flour, what are some equivalent ratios?

Back

4/5 = 8/10 = 12/15 are equivalent ratios for sugar to flour.

Front

What is the missing number in the ratio 3:4 = ? : 12?

Back

The missing number is 9.

Front

If the ratio of 6th graders to 7th graders is 4:1 and there are 8 7th graders, how many 6th graders are there?

Back

There are 32 6th graders.

Front

What is the simplest form of the ratio 10:15?

Back

The simplest form of the ratio 10:15 is 2:3.

Front

If two ratios are equivalent, what can you say about their cross products?

Back

The cross products of two equivalent ratios are equal. For example, in the ratios a:b and c:d, if a/b = c/d, then a*d = b*c.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, often expressed in the form a:b.