Quiz Unit 4- Ratios and Rates

Unit Rate is a rate with a denominator of one unit.

• yes

• no

What is it called when two different units are being compared?

• rate

• ratio

• unit rate

• proportion

What is it called when two or more of the same units are being compared?

• rate

• ratio

• unit rate

• proportion

Look at this question:

You earn $15 every 3 weeks. At this rate, how much will you earn in 5 weeks?

This question gives you the unit rate of $15 per 3 weeks?

• yes

• no

Sam plays the clarinet for 7 1/5 hours a week. If she plays 1/1/5 hours a day, how many days a week does she practice?

• 7 1/5 ÷ 1 1/5 = 6 days

• 7 1/5 x 1 1/5 = 6 days

• 1 1/5 ÷ 7 1/5 = 6 days

• 1 1/5 x 7 1/5 = 6 days

You travel 150 miles on 5 gallons. How far did you travel per gallon?

• 15

• 3

• 30

• 25

You earn $15 every 3 weeks. At this rate, how many weeks until you earn $75?

• 18 weeks

• 225 weeks

• 9 weeks

• 15 weeks

Find the unit rate of 624 calories in 3 servings.

• 1,872 calories per serving

• 624 calories per serving

• 208 calories per serving

• 621 calories per serving

Express as a unit rate. Round to the nearest tenth, if necessary.

$25.97 for 8 boxes

• $3.24 per box

• $3.25 per box

• $3.00 per box

• $0.31 per box

88 students for 4 classes

How many students per class?

*****Careful*****

• 22 students per class

• 25 classes per student

• 22 classes per student

• 25 students per class