Ratios and Equivalent Ratios

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a : b'. For example, if there are 2 apples and 3 oranges, the ratio of apples to oranges is 2 : 3.

Front

What is an equivalent ratio?

Back

Equivalent ratios are ratios that express 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

You can find equivalent ratios by multiplying or dividing 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

What is the ratio of 4 meatballs to 1 cup of sauce?

Back

The ratio is 4 : 1.

Front

Are 4 : 5 and 8 : 15 equivalent ratios?

Back

No, they are not equivalent ratios.

Front

If tomatoes and cucumbers are planted in a ratio of 4 : 1, how many tomato plants are there if there are 14 cucumber plants?

Back

There are 56 tomato plants.

Front

What is one equivalent ratio for 15 : 30?

Back

One equivalent ratio is 5 : 10.

Front

If a recipe calls for a ratio of 2 cups of flour to 3 cups of sugar, how many cups of sugar are needed for 4 cups of flour?

Back

6 cups of sugar are needed.

Front

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

Back

The simplest form is 2 : 3.

Front

If the ratio of boys to girls in a class is 3 : 4 and there are 12 boys, how many girls are there?

Back

There are 16 girls.