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.

Front

How do you write a ratio?

Back

Ratios can be written in three ways: using a colon (e.g., 3:2), as a fraction (e.g., 3/2), or with the word 'to' (e.g., 3 to 2).

Front

What does part-to-part ratio mean?

Back

A part-to-part ratio compares two parts of a whole, such as the number of red apples to green apples.

Front

What does part-to-whole ratio mean?

Back

A part-to-whole ratio compares a part to the entire group, such as the number of birds to the total number of animals.

Front

If there are 4 red apples and 3 green apples, what is the ratio of red apples to green apples?

Back

4 red apples to 3 green apples.

Front

If there are 4 birds and 6 snakes, what is the ratio of birds to snakes?

Back

2/3.

Front

What is an equivalent ratio?

Back

An equivalent ratio is a ratio that expresses the same relationship between quantities, such as 2:3 and 4:6.

Front

Which of the following is NOT equivalent to 3:5? 15:25, 9:15, 21:28, 30:50

Back

21:28.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor.

Front

What is the ratio of birds to total animals if there are 4 birds and 6 snakes?

Back

4/10.