Review Unit 2 Fossum

A comparison of two quantities (amounts)

• Ratio
• Proportion
• Rate
• Multiplicative Relationship 

A ratio that expresses the same relationship

• Rate
• Ratio
• Equivalent Ratio
• Integer

Which ratio is equivalent to 3:4

• 12:14
• 6:8
• 4:3
• 20:15

Which ratio is equivalent to 12:20

• 20:12
• 2:3
• 3:5
• 3:10

There are 21 boys and 6 girls in Mr. Keys' homeroom.  What is the ratio of girls to boys?  

• 6:21
• 21:6
• 2:7
• 7:2

Mr. Keys made $90 in 5 hours.  What is the unit rate?  

• $18 per hour
• $1 in 18 hours
• $90:5h
• 5 to 90

It costs $8.21 for 3 candy bars. What is the unit price one candy bar? 

• 2.73
• 6.90
• 71.8
• 76.0

On a map, if one centimeter represents 25 kilometers, how many kilometers does 7 centimeters represent?

• 175
• 185
• 200
• 220

 Which runs faster: a cheetah that can run 60 feet in 4 seconds or gazelle that can run 100 feet in 8 seconds?

• A cheetah at a unit rate of 14 ft per sec
• A gazelle at a unit rate of 12 ft per sec
• A cheetah at a unit rate of 15 ft per sec
• A gazelle at 12.5 ft per sec

The babysitter earns $9 per hour. Which statement is NOT true?

• The babysitter earns $18 for 2 hours.
• The babysitter earns $36 for 4 hours
• The babysitter earns $90 for 10 hours
• The babysitter earns $36 for 3 hours