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., 2:3), as a fraction (e.g., 2/3), or with the word 'to' (e.g., 2 to 3).

Front

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

Back

The ratio of dogs to all pets is 2:11.

Front

What is a part-to-part ratio?

Back

A part-to-part ratio compares two parts of a whole, such as the number of boys to girls in a class.

Front

What is a part-to-whole ratio?

Back

A part-to-whole ratio compares a part to the entire group, such as the number of red M&Ms to the total number of M&Ms.

Front

If there are 13 boys and 10 girls in a classroom, what is the ratio of boys to girls?

Back

The ratio of boys to girls is 13 to 10.

Front

What is the ratio of oranges to fruit if there are 2 oranges and 6 total fruits?

Back

The ratio of oranges to fruit is 2:6.

Front

How do you simplify the ratio 4:8?

Back

To simplify the ratio 4:8, divide both numbers by their greatest common divisor, which is 4. The simplified ratio is 1:2.

Front

What does it mean if a ratio is expressed as 1:3?

Back

It means for every 1 of the first quantity, there are 3 of the second quantity.

Front

If a recipe calls for 2 cups of flour to 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.