Download presentation

1
Math 015 Section 8.1 Percents

2
**Obj: To write a percent as a fraction or a decimal**

Percent means parts of 100 In the figure at the right, 23 of the 100 squares are shaded. We say that 23% of the squares are shaded. In most application problems it will be necessary to convert percents to fractions or decimals in order to work with them in the problems.

3
**Obj: To write a percent as a fraction or a decimal**

1. remove the percent sign 2. divide by 100 3. simplify the fraction Examples: change the following percents to fractions 13 13% = = 100 44 44% = = 100

4
**Obj: To write a percent as a fraction or a decimal**

1. remove the percent sign 2. divide by 100 3. simplify the fraction Examples: change the following percents to fractions 240 12 25 240% = = = 2 100 5 1 23 16 23 = 50 16 16 % = = 3 100 2

5
**Certain percents and their fraction equivalents should be memorized**

1 5 20 % 25 % 50 % 75 % = 1 6 23 % % % = 1 4 1 3 13 1 2 2 3 23 3 4

6
**Obj: To write a percent as a fraction or a decimal**

To write a percent as a decimal 1. remove the percent sign 2. divide by 100 Examples: change the following percents to decimals 61 % = 61 100 = 0.61 0.5 % = 0.5 100 = 0.005 235 % = 235 100 = 2.35

7
**Obj: To write a fraction or a decimal as a percent**

To write a fraction or decimal as a percent 1. multiply by 100 % Examples: change the following to percents 38 38 100 % 300 75 12 = = % = % = 37 % 8 2 0.048 = 0.048 100 % = 4.8 % 1.17 = 1.17 100 % = 117 %

8
**1 Obj: To write a fraction or a decimal as a percent**

To write a fraction or decimal as a percent 1. multiply by 100 % Write as a percent: write the remainder in fraction form 56 56 100 % 500 250 % 13 = = % = = 83 % 6 3 Write as a percent: round to the nearest tenth 13 100 % 1300 1 49 = = % = 144.4 % 9 9

Similar presentations

© 2022 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google