# Lesson 8-4 Pages 350-353 - PowerPoint PPT Presentation

Lesson 8-4 Pages 350-353

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Lesson 8-4 Pages 350-353

## Lesson 8-4 Pages 350-353

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##### Presentation Transcript

1. Lesson 8-4 Pages 350-353 Percent of Change Lesson Check 8-3

2. What you will learn! How to find the percent of increase or decrease.

3. Vocabulary

4. What you really need to know! A percent of changeis a ratio that compares the change in quantity to the original amount. If the original quantity is increased, it is a percent of increase. If the original quantity is decreased, it is a percent of decrease.

5. What you really need to know!

6. What you really need to know!

7. Example 1: Last year a sweater sold for \$56. This year the same sweater sells for \$60. Find the percent of change in the cost of the sweater. Round to the nearest whole percent if necessary.

8. 7% increase

9. Example 2: On the first day of school this year, 435 students reported to Bellwood Middle School. Last year on the first day, 460 students attended. Find the percent of change for the first day attendance. Round to the nearest whole percent if necessary.

10. -5% decrease

11. Page 352 Guided Practice #’s 4-10

12. Read: Pages 350-351 with someone at home and study examples!

13. Homework: Page 352-353 #’s 12-30 even #’s 33-41 Page 583 Lesson 8-4 Lesson Check 8-4

14. Link to Lesson 8-4 Review Problems

15. Page 583 Lesson 8-4

16. Lesson Check 8-4