Unit Rate and Unit Cost Honors Math – Grade 6. Problem of the Day The price list at the right shows the sale prices for DVDs in three different video.

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Presentation transcript:

Unit Rate and Unit Cost Honors Math – Grade 6

Problem of the Day The price list at the right shows the sale prices for DVDs in three different video stores. Which store has the better buy? KEY CONCEPT Rate A rate is a ratio that compares two unlike quantities. A unit rate is a ratio that is simplified to have a denominator of 1 unit. It compares an amount, x, to one unit… A unit cost is the price per unit of an item. To find the better buy, find the unit rate. Then compare unit rates.

Write a ratio for each situation. Find the unit rate for Abe’s DVDs Find the unit rate for DVD Exchange. Find the unit rate for DVD City.

Express each as a unit rate. 70 minutes to stock 14 shelves140 miles on 4 gal of gas 720 words in 60 lines5 oranges for $1.20

$6.00 for 12 lb of spaghetti4 quarts of soup for $3.80 Express each as a unit rate.

Which is the better buy?

Find the better buy. 3 pt for $1.08 or 5 pt for $ cans for $4 or 4 cans for $5.50

A 30-ounce jar of salad dressing costs $2.39. A 24-ounce jar costs $2.14 and a 13-ounce jar costs $1.42. To the nearest cent, what is the cost per ounce of each size jar? Which is the best buy? 30-ounce jar24-ounce jar13-ounce jar