Calculating Unit Rate I can find the unit rate of an item Flashback You are at the grocery store and you see the following sale sign: A 10-lb bag of cherries On sale for $8 How much does one lb of cherries cost?? To find the price of 1 pound of cherries, we take the total price we paid and divide it by the number of pounds of cherries bought Total price $8 80 cents/lb Amount of cherries bought 10 lb 80 cents per pound is the UNIT RATE A ratio that compares two quantities measured in different units is called a rate. For example: • Miles per hour • Price per pound • Calories per serving A unit rate is a rate that has a denominator of 1 unit. Find the Unit Rate for each of the following situations: On a field trip there are 60 students on 4 buses. What is the unit rate of students per bus? 15 students per bus Find the Unit Rate for each of the following situations: In the gymnasium there are 200 chairs in 50 rows. What is the unit rate of chair per row? 4 Chairs per row Find the Unit Rate for each of the following situations: On your way to the beach, you calculate you have driven 480 miles in 8 hours. What is the unit rate of miles per hour? 60 miles per hour Find the Unit Rate for each of the following situations: On your bag of Cheetos you read that there are 600 calories for 8 servings. What is the unit rate of calories per serving? 75 calories per serving Find the Unit Rate for each of the following situations: Mrs. Smith can type 500 words in 20 minutes. What is the unit rate of words Mrs. Smith can type per min? 25 Words per minute Calculating Unit Rate Steal or Scam? Unit Rate Activity I can find the unit rate of an item For the 1st time ever, your parents have sent you to the grocery store alone. They have sent you with a limited budget, and it is your task to get the most for your money. To do this, you decide that you will check each sale price to find out whether it is a Steal -a REALLY awesome BARGAIN or a Scam -the sale actually cost more than an originally priced item For each featured item, find the unit rate. Decide whether it is a steal or a scam Show all your work on your white board. (this includes your steal or scam decision) Potatoes on sale 8 for $8.99 Original price $1.19 STEAL Carrots are on sale for 2 lbs for $3.99 Original price $0.99 per pound SCAM Cans of corn are on sale 10 for $10 Original price $.79 per can SCAM Hamburger is on sale for 5 lbs for 12.29 Original price $2.80 per pound STEAL Cheese is on sale for $5 for 4 cups. Original price $1.79 per pound STEAL Cans of green beans are on sale 5 for $8.29. Original price $1.49 per can SCAM Sandwich meat is on sale for 3 packages for $9.99 Original price $3.50 per package STEAL Pumpkin pies are on sale 5 for $13.29 Original price $3.29 per pie STEAL Carton of eggs are on sale 2 for $4.99 Original price $2.13 per carton SCAM Ice Cream is on sale 4 gallons for $5.29 Original price $1.25 per gallon SCAM Exit Slip
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