Rate and Unit Rate

Front

What is a rate?

Back

A rate is a ratio that compares two different quantities, often with different units, such as speed (miles per hour) or price (cost per item).

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is 1. For example, if a car travels 60 miles in 1 hour, the unit rate is 60 miles per hour.

Front

How do you calculate the unit rate?

Back

To calculate the unit rate, divide the first quantity by the second quantity. For example, if 120 feet are climbed in 10 seconds, the unit rate is 120 ÷ 10 = 12 feet per second.

Front

If an airplane climbs 1,520 feet in 5 seconds, how many feet does it climb per second?

Back

304 feet per second.

Front

What is the unit rate of 16 ounces of salsa for $3.36?

Back

$0.21 per ounce.

Front

What is the unit rate of 24 ounces of salsa for $4.80?

Back

$0.20 per ounce.

Front

Which is a better deal: 16 ounces for $3.36 or 24 ounces for $4.80?

Back

24 ounces for $4.80 is the better deal.

Front

What is the cost of 10.25 lbs of candy at $0.50 per pound?

Back

$5.13.

Front

If Jason has $5.00, can he buy 10.25 lbs of candy at $0.50 per pound?

Back

No, he does not have enough money.

Front

What does a ratio of 1:5 mean?

Back

It means for every 1 of the first item, there are 5 of the second item.