Ratios, Rates and Unit Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another. It can be expressed in different forms, such as a fraction, with a colon (e.g., 3:2), or with the word 'to' (e.g., 3 to 2).

Front

How do you write the ratio of girls to boys if there are 9 girls and 7 boys?

Back

The ratio of girls to boys is written as 9:7.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to one unit of another quantity, often expressed as 'per' (e.g., miles per hour).

Front

If Alice drives 250 miles in 5 hours, what is her unit rate in miles per hour?

Back

Front

What does it mean to find an equivalent rate?

Back

Finding an equivalent rate means determining a different rate that represents the same relationship between two quantities. For example, if a person earns $9 per hour, then earning $27 in 3 hours is an equivalent rate.

Front

How do you calculate the unit rate from a total amount earned and hours worked?

Back

Front

What is the ratio of wins to losses if a team has won 2 out of 6 games?

Back

The ratio of wins to losses is 2:4, since they have 2 wins and 4 losses.

Front

How can you express the ratio of two quantities?

Back

Front

What is the relationship between ratios and fractions?

Back

Front

If a rate is $9 per hour, how much would someone earn in 4 hours?

Back