Writing 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 fraction a/b.

Front

How do you write a ratio?

Back

Ratios can be written in three ways: using a colon (a:b), as a fraction (a/b), or in words (a to b).

Front

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

Back

4/10 or 2/5.

Front

What is the ratio of pears to all fruit if there are 4 apples, 2 bananas, and 5 pears?

Back

5:11.

Front

How do you find the total number of items in a ratio problem?

Back

Add all the quantities together. For example, if there are 4 apples, 2 bananas, and 5 pears, the total is 4 + 2 + 5 = 11.

Front

What is the ratio of dogs to all pets if there are 2 dogs, 4 cats, and 5 hamsters?

Back

2:11.

Front

What is the ratio of boys to girls if there are 13 boys and 10 girls?

Back

13 to 10.

Front

If there are 9 triangles and 3 squares, what is the ratio of triangles to squares?

Back

9/3 or 3:1.

Front

What does it mean if a ratio is simplified?

Back

A simplified ratio is expressed in its lowest terms, meaning that both quantities have been divided by their greatest common factor.

Front

How can you express a ratio as a fraction?

Back

To express a ratio as a fraction, write the first quantity as the numerator and the second quantity as the denominator.