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, often expressed as 'a to b' or a:b.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms of the ratio by their greatest common divisor (GCD).

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or dollars per pound.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit, such as 60 miles per hour (60 miles for 1 hour).

Front

If the ratio of yellow to green votes is 2:18, what is the simplified ratio?

Back

The simplified ratio is 1:9.

Front

In a bag of marbles with 3 blue, 2 red, and 5 yellow marbles, what is the ratio of blue to total marbles?

Back

The ratio of blue to total marbles is 3:10.

Front

If Kim makes 8 loaves of bread using 12 cups of raisins, what is the unit rate of cups of raisins per loaf?

Back

The unit rate is 1.5 cups of raisins per loaf.

Front

What is the ratio of red marbles to yellow marbles in a bag with 2 red and 5 yellow marbles?

Back

The ratio of red to yellow marbles is 2:5.

Front

How do you find the unit rate from a total cost and quantity?

Back

Divide the total cost by the quantity to find the unit rate.

Front

If Will spent $3.75 for 3 pounds of granola, what is the cost per pound?

Back

The cost per pound is $1.25.