Download presentation

1
**Percent (Concepts & Computation)**

Dec. 2

2
**Introducing Percent Percent is a ratio of a number to 100.**

The symbol for percent is % Percent means “per hundred” 17 So, is 17% 100

3
**Finding Percents and Decimals**

27 Ratio; 100 Percent; 27% Decimal; 0.27

4
To write a percent as a decimal, move the decimal point two places to the left. Drop the percent sign. 51% = 51. = 0.51 2% = 02. = 0.02 15.6% = 15.6 =0.156

5
To write a decimal as a percent, move the decimal point two places to the right, write the percent sign. 0.82 = 0.82 = 82% 0.03 = 0.03 = 3% 0.319 = = 31.9%

6
**Exercise Write each percent as a decimal**

63% = 63. = ___ 6% = 06. = ___ 22.3% = = ___ Write each decimal as a percent 0.66 = 0.66 = ___ = 0.02 = ___ 0.163 = = ____

7
**Percents and Fractions**

To find the percent for any fraction, you can divide the numerator by the denominator to find the decimal. Then you can write the percent Find the percent for ½ Divide 1 by 2 = 0.5 0.5 = 50%

8
Exercise Write as fraction, whole numbers, or mixed numbers. Show the answers in lowest terms. 1% 70% 400% 150% 57% 89% 175% Write as percents.

9
**Finding Percent using Mental Math**

fraction think example 200% 2/1 Multiply by 2 200% of 10 100% 1/1 Multiply by 1 100% of 3 50% Multiply by ½ or divide by 2 50% of 8 25% Multiply by ¼ or divide by 4 25% of 16 10% 1/10 Multiply by 1/10 or divide by 10 10% of 460

10
**Exercise 200% of 60 25% of 12 50% of 28 10% of 30 100% of 15 25% of 32**

Similar presentations

© 2023 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