7th - Spring Semester Exam

When are unit rates useful? Choose the best answer.

• When you want to subtract a number by another.
• When you want to multiply one number by another.
• When you want to compare prices.
• When you want to figure out the probability of a number.

Hamburger sells for 3 pounds for $6. If Alicia buys 10 pounds of hamburger, how much will she pay?

• $30
• $20
• $60
• $10

If Justin ordered 5 ice cream bars for $12.25, how much was each ice cream bar?

• $2.45
• $4.00
• $7.25
• $1.25

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

• 15 miles
• 30 miles
• 3 miles
• 25 miles

What is a Ratio?

• Is a comparison of two quantities with the same unit 
• Is a comparison of two quantities with different units
• A number over another number
• Two decimals that can be multiplied

The ratio 35 : 84 in simplest form is:

• 5 : 7

• 7 : 12

• 5 : 12

• none of these

A ratio equivalent to 3 : 7 is:

• 3 : 9

• 6 : 10

• 9 : 21

• 18 : 49

75% of what number is 48?

• 48
• 100
• 64
• 75

Compare using < or > or =
20% of 30 ____ 30% of 40

• >
• <
• =

The car travels 440 miles in 8 hours. What is the unit rate?

• 12 miles in 1 hour
• 55 miles in 1 hour
• 110 miles in 1 hour
• 44 miles in 1 hour