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Discounts

Discounts. Week 13. DO NOW (3 mins ) PKB (Prior Knowledge Box ). STANDARD 7N.S. 1.7. Solve problems that involve discounts, markups, commissions, and profit and compute simple and compound interest. OBJECTIVE. Huskies will be able to calculate the discount of a quantity.

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Discounts

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  1. Discounts Week 13

  2. DO NOW (3 mins)PKB (Prior Knowledge Box)

  3. STANDARD 7N.S. 1.7 Solve problems that involve discounts, markups, commissions, and profit and compute simple and compound interest.

  4. OBJECTIVE Huskies will be able to calculate the discount of a quantity.

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

  16. So what does it look like on the CAHSEE? 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 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

  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)

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