Ratios and Rates

Front

What is a Ratio?

Back

Is a comparison of two quantities.

Front

If there are 1 PC for every 5 Mac computers in a lab with a total of 24 computers, how many are Mac?

Back

20

Front

What is a rate comparing two different quantities?

Back

Rate.

Front

Which of the following is NOT a unit rate: 27 sandwiches in 3 weeks, 45 miles per hour, 2 cars per 1 lane, 2 tanks of gas per 1 yard?

Back

27 sandwiches in 3 weeks.

Front

Which of the following is NOT a unit rate: 1 minute per 3 feet, 0.3 miles per 1 minute, 4 dogs per 1 yard, 0.75 hour per 1 game?

Back

1 minute per 3 feet.

Front

What is a Unit Rate?

Back

A rate with a denominator of one.

Front

How do you convert a ratio to a fraction?

Back

By writing the first quantity as the numerator and the second as the denominator.

Front

What is the relationship between ratios and rates?

Back

A rate is a specific type of ratio that compares two different units.

Front

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

Back

2:3.

Front

What does it mean if a ratio is simplified?

Back

It means the quantities have been reduced to their smallest whole number form.