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 to b' or a:b.

Front

How can a ratio be written?

Back

A ratio can be written in three ways: 1) a:b, 2) a/b, 3) 'a to b'. It cannot be written as 'a = b'.

Front

What is the simplest form of a ratio?

Back

The simplest form of a ratio is when the two quantities are expressed in the smallest whole numbers possible.

Front

If there are 6 yellow LEGOS and 3 red LEGOS, what is the ratio of red to yellow in simplest form?

Back

1:2

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, such as 2:4 and 1:2.

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.

Front

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

Back

2:5

Front

In a recipe, if the ratio of flour to sugar is 4:1, how much sugar is needed for 8 cups of flour?

Back

2 cups of sugar.

Front

What is the ratio of green dots to orange dots if there are 3 green dots and 5 orange dots?

Back

3:5

Front

If a car travels 60 miles in 1 hour, what is the ratio of distance to time?

Back

60 miles to 1 hour or 60:1.