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Published byDelaney Colmer Modified over 2 years ago

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Better Buys! Objective: Learn to make comparisons and identify which one is the better buy.

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Example to discuss: Alberto wants to buy flowers for his girl friend. He goes to the flower shop and they charge him $42 for 2 dozen roses. He finds it expensive so he goes to the gift shop and they charge him $50 dollars for 3 dozen roses. Find the unit price, then determine which option is the better buy. Steps: 1. Write the rate from the problem. 2. Find the unit rate. 3. Circle the option that is the better buy. $42 = ? Or $50 = __?___ 2 dozen 1 dozen 3 dozen 1 dozen roses roses roses Hint: Whichever is the cheaper of the two will be the better buy.

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Your example Use unit prices to find the better buy. Soda: 6 bottles for $2.16 or 8 bottles for $2.96. Cheese: $2.80 for 12 slices or $4.36 for 24 slices.

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Homework: Write each expression as a rate. Find the unit rate, then determine which is the better buy. 1. Strawberries: $1.48 for 2 baskets or $2.07 for 3 baskets. 2. Video game tokens: $1.00 for 5 tokens or $5 dollars for 30 tokens. 3. Tissue paper: $3.50 for 2 boxes or $9.00 for 5 boxes. 4. Blueberries: $2.22 for 2 baskets or $3.54 for 3 baskets. 5. Chocolates: $6.00 for 2 bags or $12 dollars for 5 bags.

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