1. Percent Increase and Decrease

2. Language Goal  Students will be able to verbally express percent increase and decrease. Math Goal  Students will be able to find percent increase and decrease. Essential Question  What are instances where you may encounter both percent increase and decrease?

8.  Percent Change: an increase or decrease given as a percent of the original amount.  Percent Increase: an increase given as a percent of the original amount.  Percent Decrease: an decrease given as a percent of the original amount.

9.  Discount: an amount by which an original price is reduced.  Markup: the amount by which a wholesale cost is increased.

11.  Find each percent change. Tell whether it is a percent increase or decrease. A. From 25 to 49B. from 50 to 45 C. from 200 to 110

12. A. Find the result when 30 is increased by 20%. B. Find the result when 65 is decreased by 80%.

13.  Discount = % of original price  Final price = original price – discount  Markup = % of wholesale cost  Final price = wholesale cost + markup

14.  A. Admissions to the museum is $8. Students receive a 15% discount. How much is the discount? How much do students pay?  Method 1:  Method 2:

15.  B. Christo used a coupon and paid $7.35 for a pizza that normally costs $10.50. Find the percent discount.

16.  C. A $220 bicycle was on sale for 60% off. Find the sale price.

17.  D. Ray paid $12 for a $15 T-shirt. What was the percent discount?

18.  A. Kaleb buys necklaces at wholesale cost of $48 each. He then marks up the price by 75% and sells the necklaces. What is the amount of the markup? What is the selling price?  Method 1:  Method 2:

19.  B. Lars purchased a daily planner for $32. The wholesale cost was $25. What was the percent markup?