1. WEEK 13 Discounts

2. DO NOW (3 MINS) PKB (PRIOR KNOWLEDGE BOX) Topic: DiscountsMisconceptions Complete this side only. List anything that you know about the above topic.

3. SOLVE PROBLEMS THAT INVOLVE DISCOUNTS, MARKUPS, COMMISSIONS, AND PROFIT AND COMPUTE SIMPLE AND COMPOUND INTEREST. STANDARD 7N.S. 1.7

4. HUSKIES WILL BE ABLE TO CALCULATE THE DISCOUNT OF A QUANTITY. OBJECTIVE

5. YOU BUY A PAIR OF JEANS AT H&M THAT IS 33% OFF THE ORIGINAL PRICE OF $29. WHAT IS THE SALE PRICE? Intro

6. VOCABULARY Discount: A ________or amount of decrease in the price of an item. Sale price = original price - ___________

7. % OF A NUMBER % OF A NUMBER % X THE NUMBER % X THE NUMBER KEY INFORMATION EXAMPLE 30% OF $60 = 0.30(60) = $18 SALE = ORIGINAL-DISCOUNT = $60-$18 = $60-$18 = $42 = $42

8. EXAMPLE#1 The original price of a shirt is $18. The shirt is on sale for a 20% discount. What is the sale price of the shirt?

9. Let’s Try

10. SOLUTION Discount = 20% of $18  Find the amount of discount. = 0.20(18) = 3.60 Sale price = original price - discount  Use formula to find sale price. = 18 - 3.60 = 14.40 ANSWER The sale price of the shirt is $14.40.

11. TRY THIS! Find the sale price. Original Price: $40 Percent Discount: 30%

12. AND THIS! Find the sale price. Original Price: $75 Percent Discount: 25%

13. PRACTICE PROBLEMS Original price of concert tickets: $100.00 Discount: 21%

14. PRACTICE PROBLEMS Original price of a book: $18.50 Discount: 45%

15. PRIOR KNOWLEDGE BOX (PKB) Topic: Discounts Misconceptions What did you think you knew but you found out was a misconception? If you didn’t have any prior knowledge, what did you learn/ review today?

16. SO WHAT DOES IT LOOK LIKE ON THE CAHSEE? 20. A CD player regularly sells for $80. It is on sale for 20% off. What is the sale price of the CD player? A $16 B $60 C $64 D $96 19. A pair of jeans regularly sells for $24.00. They are on sale for 25% off. What is the sale price of the jeans? A $6.00 B $18.00 C $20.00 D $30.00

17. EXIT SLIP- DISCOUNTS Name Date Period

18. AGENDA Homework-5 word problems (percent decrease/increase) Find the sale price… Original price of a camera: $554.99 Discount: 48% Bring a white board marker (DUE: P.1,3,5- Mondays and Thursday. P.2,4,6- Tuesdays and Fridays)