Unit Rates and Slope: Fun with Proportional Thinking

A car travels 120 miles in 2 hours. What is the unit rate of miles per hour?

• 120 miles per hour

• 90 miles per hour

• 60 miles per hour

• 30 miles per hour

If a recipe calls for 3 cups of flour to make 12 cookies, how many cups of flour are needed for 30 cookies?

• 4.5 cups

• 5 cups

• 10 cups

• 7.5 cups

A store sells 5 apples for $2. What is the cost of 1 apple?

• $1.00

• $0.25

• $0.50

• $0.40

A bike rental shop charges $15 for the first hour and $5 for each additional hour. How much would it cost to rent a bike for 4 hours?

• $25

• $35

• $30

• $20

If a train travels at a constant speed of 60 miles per hour, how far will it travel in 3 hours?

• 150 miles

• 240 miles

• 90 miles

• 180 miles

A gardener plants 4 rows of flowers with 6 flowers in each row. How many flowers are there in total?

• 18

• 20

• 24

• 30

If a car uses 2 gallons of gas to travel 50 miles, what is the unit rate of miles per gallon?

• 30 miles per gallon

• 15 miles per gallon

• 20 miles per gallon

• 25 miles per gallon

A recipe requires 2 tablespoons of sugar for every 1 cup of flour. How much sugar is needed for 3 cups of flour?

• 4 tablespoons of sugar

• 6 tablespoons of sugar

• 2 tablespoons of sugar

• 8 tablespoons of sugar

A graph shows that for every 5 books read, a student earns 10 points. What is the slope of the line representing this relationship?

• 5

• 2

• 1

• 10

If a person walks 3 miles in 1 hour, how long will it take to walk 12 miles at the same pace?

• 4 hours

• 3.5 hours

• 2 hours

• 5 hours