Ratio

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

How do you write a ratio?

Back

Ratios can be written in three ways: using a colon (e.g., 3:4), as a fraction (e.g., 3/4), or with the word 'to' (e.g., 3 to 4).

Front

What does it mean to simplify a ratio?

Back

Simplifying a ratio means reducing it to its simplest form by dividing both terms by their greatest common divisor.

Front

If the ratio of boys to girls is 3:4 and there are 20 girls, how many boys are there?

Back

15 boys.

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 (e.g., 2:3 is equivalent to 4:6).

Front

How do you find a missing value in a ratio?

Back

To find a missing value in a ratio, set up a proportion and cross-multiply to solve for the unknown.

Front

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

Back

The ratio is 4 red apples to 3 green apples.

Front

If 2:3 = ___:18, what is the missing number?

Back

12.

Front

What is the simplified form of the ratio 9:6?

Back

3:2.

Front

How do you express the ratio of two quantities?

Back

You express the ratio by comparing the two quantities, such as the number of boys to the number of girls.