Rate, Ratios and Unit Rates

Which of the following expresses a ratio?

• 2/3

• two-thirds

• 0.667

• 2.3

9 minutes to 5 miles

• Ratio

• Rate

• Unit Rate

Mrs. Edgar bought an eight pack of bottled water for $4.00.  What was the unit price for the water?

• $32.00

• $0.50

• $3.20

• $5.00

Express the ratio as a fraction in simplest form:
18 ounces to 3 cups

• 6 to 1

• 1/6

• 18/3

• 3/18

The table shows the cost of long distance calls based on the number of minutes used. Is there a constant rate of change, and if so what is it?

• Yes, 10 calls per minute

• Yes, $.10 per minute

• Yes, $.40 per minute

• Not a constant rate

What is a rate in which the second quantity in the comparison is one unit? 
Example: 
10 cm/1 minute
10 cm per minute

• proportion

• constant

• unit rate

• fraction

What is a comparison of two quantities by division? 
Example: 
12/25 or 12 to 25 or 12:25

• unit rate

• ratio

• similar figures

• term

88 students for 4 classes
How many students per class?

• 22 students per class

• 25 students per class

How many pieces are there per ounce?

• 5 pieces

• 0.2 pieces

• 50 pieces

• 60 pieces

The pet shop has 2 dogs, 4 cats, and 5 hamsters. What is the ratio of dogs to all pets?

• 2:4

• 2:5

• 2:11

• 11:2