Proportions Rates Ratios

What mathematical operation does unit rates involve?

• addition
• subtraction
• multiplication
• division

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

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

In an animal shelter, there are 5 dogs for every 20 cats. Which rate best represents the relationship between dogs and cats?

• 10 dogs for every 40 cats
• 1 dog for every 5 cats
• 2 dogs for every 10 cats
• 12 dogs for every 50 cats

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.

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

• 12 miles per hour
• 55 miles per hour
• 110 miles per hour
• 44 miles per hour

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

• $30
• $20
• $60
• $10

Mrs. Nuckels used 3 cups of flour to make 60 cookies.  How many cups of flour did she use to make 90 cookies?

• 6 c.
• 30 c.
• 4 1/2 c.
• 5 c.

Mr. Foster drove 160 kilometers in 2 hours. What is the distance he can travel in 6 hours?

• 540
• 48
• 480
• 54

What is a Ratio?

• Is a comparison of two quantities 
• A rate with a denominator of one
• It is when the only factor the numerator and denominator share is a one 
• Two decimals that can be multiplied

If there are 5 soccer players, 10 baseball players, and 15 basketball players, what is the ratio of baseball players to soccer players?

• 1 to 2
• 1 to 3
• 2 to 1
• 3 to 1