Upcoming SlideShare
×

# Percent Of Change

1,909 views

Published on

Chapter 6 Section 7 Percent Of Change

Published in: Education
0 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

• Be the first to like this

Views
Total views
1,909
On SlideShare
0
From Embeds
0
Number of Embeds
59
Actions
Shares
0
41
0
Likes
0
Embeds 0
No embeds

No notes for slide

### Percent Of Change

1. 1. Chapter 6, Section 7: Percent of Change <ul><li>Warm Up: Write each decimal as a percent. </li></ul><ul><li>0.46 </li></ul><ul><li>2.47 </li></ul><ul><li>0.03 </li></ul><ul><li>5.236 </li></ul><ul><li>46% </li></ul><ul><li>247% </li></ul><ul><li>3% </li></ul><ul><li>523.6% </li></ul>
2. 2. Finding Percent of Increase <ul><li>The percent an amount increases or decreases from its original amount is the percent of change . </li></ul><ul><li>So Percent of Change = </li></ul>amount of change original amount
3. 3. Find the percent of increase from 4 to 7.5 <ul><li>1 st : amount of increase: 7.5 – 4 = 3.5 </li></ul><ul><li>2 nd : set up fraction. </li></ul><ul><li>Percent of increase = </li></ul>amount of change original amount Divide to find the decimal. Move decimal 2 places to the right Percent increase from 4 to 7.5 is 87.5% 7.5 – 4 4 = 3.5 4 = 0.875 = 87.5%
4. 4. Try These: Find each percent of increase. <ul><li>From 100 to 114 </li></ul><ul><li>From 2.0 to 3.2 </li></ul><ul><li>From 4,000 to 8,500 </li></ul>14% 60% 112.5%
5. 5. Word Problem <ul><li>The annual production of video games in the United States has more than doubled since the 1960s. Find the percent of increase from 1960 to 1990. </li></ul>Percent of increase from 1960-1990 was about 133%. 205,000 1990 88,000 1960 Number of Video Games Produced Year
6. 6. Finding Percent of Decrease <ul><li>Percent of Decrease is found the SAME way that Percent of Increase is. </li></ul><ul><li>1 st : Find Percent of Decrease. </li></ul><ul><li>Subtract both numbers being compared. </li></ul><ul><li>2 nd : Amount of Decrease </li></ul><ul><li>Original Amount </li></ul><ul><li>3 rd : Divide and move decimal 2 places to the right. </li></ul>
7. 7. Find each percent of decrease. Round to nearest tenth. <ul><li>From 9.6 to 4.8 </li></ul><ul><li>From 202 to 192 </li></ul><ul><li>From 854.5 to 60.6 </li></ul>50% 5% 92.9%
8. 8. Word Problem <ul><li>A computer that costs \$875 last year costs \$745 this year. Find the percent of decrease to the nearest percent. </li></ul>14.85%
9. 9. Assignment #23 <ul><li>Page 318: 6-36 all. </li></ul><ul><li>www.phschool.com </li></ul><ul><li>Code: awe-0607 </li></ul>