Ratios and Unit Rates (assignment)Name ______

CCSS Math 7.RPPeriod ______

Write each as a unit rate. PLEASE LABEL YOUR ANSWERS.

1. 180 miles in 3 hours2. 256 miles per 8 gallons3. $9.60 for 4 pounds

4. $4.80 for 6 cans5. 300 words in 5 minutes6. 72 points in 8 games

7. DOWNLOADAt 1:30 p.m., you have 20 megabytes of a movie. At 1:45 p.m., you have 95 megabytes. What is the download rate in megabytes per minute?

What’s the best buy? Show your work to prove your answer.

8. You can buy 5 cans of green beans at the Village Market for $2.10. You can buy 14 of the same cans of beans at Walmart for $6.90. Which place is the better buy?

9. You can buy 3 apples at the Quick Market for $1.29. You can buy 5 of the same apples at Stop and Save for $2.55. Which place is the better buy?

10. A 4 liter bottle of laundry detergent costs $7.99. A 6.5 liter bottle of laundry detergent costs $16.99. Which is the better buy?

Comparing Ratios. You might want to use unit rates to help you answer the following questions. SHOW YOUR WORK!!

1. A new Toyota Camry can go 72 miles on 3 gallons of gas. The new Mazda RX8 can

get 88 miles on 4 gallons of gas. Based on these rates, show me which car gets

better gas mileage.

2. Larry can type 72 words every three minutes on a computer. Sarah can type 105

words in 5 minutes. Show me who can type faster.

3. At the Maverick station you can get two 24 ounce Monster drinks for $5.00. At Albertsons you can buy a 16 ounce Monster drink for $1.50. Show me which is the better buy.

Review: Use a ratio table if necessary.

Recently there was an informal survey conducted here at MMS asking students which subject is their favorite. Here are the results.

Math: 3 students English: 2 students Science: 7 students World Civilization: 6 students

  1. What is the ratio of students who prefer math to those that prefer science?
  1. What is the ratio of students who prefer World Civilization to total students surveyed?
  1. At these rates, if 10 students said they prefer math, then how many students would prefer World Civilization?
  1. At these rates, if there is 200 total students in the 7th grade, how many of them would say their favorite subject is science?
  1. At these rates, if we surveyed the entire school and 132 students said their favorite subject is World Civilization, then how many total students would there be here at MMS?