Ratios and Rates

Front

What is a ratio?

Back

A comparison of two quantities.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.

Front

If Paula reads 88 pages in 2 hours, how many pages does she read per hour?

Back

44 pages per hour.

Front

Find the unit rate for 56 cookies in 7 batches.

Back

8 cookies per batch.

Front

Find the unit rate for 45 students for 5 teachers.

Back

9 students per teacher.

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.

Front

If the ratio of cats to dogs is 3:4, how many cats are there if there are 12 dogs?

Back

9 cats.

Front

What does it mean to simplify a ratio?

Back

To simplify a ratio means to reduce it to its lowest terms.

Front

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

Back

2:3.

Front

How do you find a missing value in a ratio?

Back

You can use cross-multiplication to find a missing value in a ratio.