Converting Ratios to Unit Rates

What is a unit rate?

• A ratio where one of the numbers is zero

• A ratio where both numbers are fractions

• A ratio where one of the numbers is one

• A ratio where both numbers are equal

If there are 10 slices of pizza for 4 kids, what is the unit rate of slices per kid?

• 2 slices per kid

• 2.5 slices per kid

• 3 slices per kid

• 4 slices per kid

How many slices of pizza are needed for 10 kids if each kid gets 2.5 slices?

• 22.5 slices

• 20 slices

• 27.5 slices

• 25 slices

In a cage with only spiders, the ratio of legs to spiders is 56 to 7. What is the unit rate of legs per spider?

• 6 legs per spider

• 7 legs per spider

• 8 legs per spider

• 9 legs per spider

Melanie paid $6.75 for 3 pretzels. What is the unit price per pretzel?

• $2.75

• $2.25

• $2.00

• $2.50

A recipe calls for 2 cups of salt for every 8 cups of water. What is the unit rate of salt per cup of water?

• 1/2 cup of salt per cup of water

• 1/3 cup of salt per cup of water

• 1/4 cup of salt per cup of water

• 1/5 cup of salt per cup of water

A tree grows 3 feet every 5 years. What is the unit rate of growth per year?

• 1/2 foot per year

• 3/5 foot per year

• 5/3 foot per year

• 2/3 foot per year

A car travels 124 miles in 2 hours. What is its speed in miles per hour?

• 62 mph

• 64 mph

• 60 mph

• 66 mph

If a car travels at 62 miles per hour, how far will it travel in 3 hours?

• 180 miles

• 186 miles

• 192 miles

• 198 miles

A bug travels 13 inches in 4 minutes. What is its speed in inches per minute?

• 3.25 inches per minute

• 3.00 inches per minute

• 3.10 inches per minute

• 3.20 inches per minute