1 / 13

Percent of Change: Chapter 7.5

Percent of Change: Chapter 7.5. Goals: To find percent of increase and decrease. To solve problems involving percent of change. Vocabulary. Percent of change: an increase or decrease expressed at a percent. Percent of increase: the new number is greater than the original number.

ayita
Download Presentation

Percent of Change: Chapter 7.5

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Percent of Change: Chapter 7.5 Goals: To find percent of increase and decrease. To solve problems involving percent of change.

  2. Vocabulary • Percent of change: an increase or decrease expressed at a percent. • Percent of increase: the new number is greater than the original number. • Percent of decrease: the new number is less than the original number.

  3. Percent of Change Formula difference in the amounts = % change original amount 100

  4. Identify if it’s an increase or decrease! • original: 32 new: 40 • original: 20 new: 4 Increase Decrease

  5. Identify if it’s an increase or decrease! • original: 450 new: 504 • original: 225 new: 243 Increase Increase

  6. Identify if it’s an increase or decrease! • original: 36 new: 27 • original: 85 new: 119 Decrease Increase

  7. Identify if it’s an increase or decrease! • original: 32 new: 40 • original: 20 new: 4 x x Difference Difference = = 20 100 32 100

  8. Identify if it’s an increase or decrease! • original: 450 new: 504 • original: 225 new: 243 x x Difference Difference = = 450 100 225 100

  9. Identify if it’s an increase or decrease! • original: 36 new: 27 • original: 85 new: 119 x x Difference Difference = = 36 100 85 100

  10. Identify if it’s an increase or decrease! • original: 32 new: 40 • original: 20 new: 4 x x 16 8 Difference Difference = = 20 100 32 100 1600 = 20x 800 = 32x 20 20 32 32 X = 80% X = 25% Increase Decrease!

  11. Identify if it’s an increase or decrease! • original: 450 new: 504 • original: 225 new: 243 x x 18 54 Difference Difference = = 225 100 450 100 1800 = 225x 5400 = 450x 225 225 450 450

  12. Identify if it’s an increase or decrease! • original: 36 new: 27 • original: 85 new: 119 x x 9 34 Difference Difference = = 100 85 100 36 900 = 36x 3400 = 85x 36 36 85 85

  13. On Your Own • original: 72 new: 36 • original: 45 new: 50 50% Decrease 11.1% Increase CHALLENGE: In 1987, the United States had 2 million active-duty military personnel. By 2000, there were only 1.4 million active-duty military personnel. What was the percent of decrease? 30% Decrease

More Related