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Unit 1: Percents

Unit 1: Percents. PC1: I can calculate the price of an item after a discount has been applied. PC2: I can calculate the price of an item after sales tax has been applied. PC3: I can calculate the final price of an item (using discounts and sales tax)

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Unit 1: Percents

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  1. Unit 1: Percents PC1: I can calculate the price of an item after a discount has been applied. PC2: I can calculate the price of an item after sales tax has been applied. PC3: I can calculate the final price of an item (using discounts and sales tax) PC4: I can define the terms principal, rate, and interest. PC5: I can calculate saving account totals PC6: I can calculate grand totals when buying things on credit.

  2. Discount? A percent or an amount of decrease in the price of an item Sale price = Original price - Discount

  3. Discussion Example #1:

  4. Discussion Example #2:

  5. Discussion Example #3: In a video store, a DVD that sells for $15 is marked "10% off." What is the discount? What is the sale price of the DVD?

  6. Group Examples: Complete the following problems together as a group. Everyone must write the problem down and complete all of the work required. After ample time has been given students will be picked to go to the board to work the problem out and explain. For each problem, find the total cost. 6.) In a department store, a $40 dress is marked, "Save 25%.“ 7.) In a grocery store, a $12 case of soda is labeled, "Get a 20% discount." What is the discount? What is the sale price of the case of soda? 8.) A pizzeria has a coupon that reads, "Get 1/3 off a $9.00 cheese pizza."

  7. Individual Practice: Complete the following problems ON YOUR OWN! You need to write the problem down and complete all of the work required. Find the total cost. 9.) Molly wants to buy a skirt. The original price was $29. The skirt is 30% off. 10.) Sammy buys his clothes at Super Discounts. He bought shoes regularly priced at $40 for 25% off. 11.) Sammy also bought a jacket regularly priced at $100 for 20% off 12.) A CD player that regularly sells for $79.00 is on sale at a 15% discount. 13.) Doughboys is having a special today only. You can get 2/5 off of a large pizza (that normally costs $12.99).

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