Скачать презентацию PERCENT INCREASE OR DECREASE HOW CAN YOU Скачать презентацию PERCENT INCREASE OR DECREASE HOW CAN YOU

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PERCENT INCREASE OR DECREASE PERCENT INCREASE OR DECREASE

HOW CAN YOU USE PERCENTS TO SHOW CHANGE? Example: To show what percent the HOW CAN YOU USE PERCENTS TO SHOW CHANGE? Example: To show what percent the prices increase or decrease. X = 100 Difference between two amounts Original Number

EXAMPLE 1 Prices at a local electronic store have changed over the years. By EXAMPLE 1 Prices at a local electronic store have changed over the years. By what percent did the prices increase or decrease for the stereo system? X = Difference between two amounts 100 Original Number X = 100 37 98. 95 X = 3700 X≈ 37. 4% Item 1994 2004 Stereo System $98. 95 $135. 9 5 Cell Phone $245 $159

EXAMPLE 2 What percent did the prices change for the Cell phone? X = EXAMPLE 2 What percent did the prices change for the Cell phone? X = Difference between two amounts 100 245 X = 8, 600 X≈35. 1 1994 2004 Stereo System $98. 95 $135. 95 Cell Phone $245 $159 Original Number X = 86 100 Item

John David is at the mall and wants to buy a T-shirt that John David is at the mall and wants to buy a T-shirt that he saw last month for $20. The T-shirt now costs $25. Find the percent increase or decrease. X = 5 100 20 20 X = 500 X≈25% Increase

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1. ) Joznel wants to buy a jacket at Justice for $72. 00. The 1. ) Joznel wants to buy a jacket at Justice for $72. 00. The jacket is now on sale for $54. 00. What is the percent decrease?

2. ) Izzi wants to buy a pair of shoes that originally cost $48. 2. ) Izzi wants to buy a pair of shoes that originally cost $48. The shoes are on sale and now cost $68. What is the percent increase?

3. ) The pair of basketball sneakers Ross wants to buy is on sale 3. ) The pair of basketball sneakers Ross wants to buy is on sale for $114. The original price of the sneakers were $120. What is the percent increase?

4. ) Michael wants to buy a authentic Phillies jersey for $189. 00. The 4. ) Michael wants to buy a authentic Phillies jersey for $189. 00. The jersey is now on sale for $159. 00. What is the percent decrease?

5. ) There are 14 people in class on Tuesday. There are 20 people 5. ) There are 14 people in class on Tuesday. There are 20 people in class on Wednesday. What is the percent increase?

6. ) Kayla needs a new tennis racket. The price of the racket is 6. ) Kayla needs a new tennis racket. The price of the racket is $65. 99. The racket is on sale for $52. 95. What is the percent decrease?

7. ) Ms. D is shopping for earrings at Kohl’s. She finds a pair 7. ) Ms. D is shopping for earrings at Kohl’s. She finds a pair for $36. 95. They are on sale for $19. 99. What is the percent decrease?

8. ) Layne is at Pacific Sunwear and wants to buy a pair of 8. ) Layne is at Pacific Sunwear and wants to buy a pair of pants she saw last week for $32. 50. The price of the pair of pants is now $45. 50. What is the percent increase?

9. ) On Monday, only 15 students brought their textbook to class. On Tuesday, 9. ) On Monday, only 15 students brought their textbook to class. On Tuesday, 22 students brought their textbooks to class. What is the percent increase?

10. ) Ms. Nelson also works at Express and receives a store discount. She 10. ) Ms. Nelson also works at Express and receives a store discount. She bought a $75 jacket for $60. What is the percent decrease?

11. ) Megan wants to a ticket for the upcoming Justin Bieber concert. The 11. ) Megan wants to a ticket for the upcoming Justin Bieber concert. The original price of the concert is $48. The ticket price increased due to popular demand is now $60. What is the percent increase?

12. ) Mrs. Heywood normally gets wonton soup for lunch. The original price is 12. ) Mrs. Heywood normally gets wonton soup for lunch. The original price is $4. 50. The Chinese restaurant just increased their prices and the soup now costs $5. 50. What is the percent increase?