1. © Math Learning e-Resource Center

2. After completing this tutorial, you should be able to: Convert percents into decimal numbers. To convert decimal numbers into percents.

3. Percent means per hundred. % is the symbol that we use to notate percent. Some examples of percentages are: 15% = 15/100 =.15 25% = 25/100 =.25 100% = 100/100 = 1.00

4. Writing a Percent as a Decimal Number When you are going from percent to decimal, drop the percent sign and then move your decimal two places to the left. Example 1 : Write 57% as a decimal. Solution : Dropping the percent sign and then moving the decimal two places to the left we get: 57% =. 57

5. Example 2 : Write 145% as a decimal. Solution : Dropping the percent sign and then moving the decimal two places to the left we get: 145% = 1.45 Example 3 : Write.34% as a decimal. Solution: Dropping the percent sign and then moving the decimal two places to the left we get:.34% =.0034

6. Writing a Decimal Number as a Percent When you are going from decimal to percent, move your decimal place two to the right and then put a % sign at the end of the number. Example 4 : Write.78 as a percent. Solution: Moving the decimal place two to the right and then putting a % sign at the end of the number we get:.78 = 78%

7. Example 5 : Write 8 as a percent. Solution: Moving the decimal place two to the right and then putting a % sign at the end of the number we get: 8 = 800% Example 6 : Write.0325 as a percent. Solution: Moving the decimal place two to the right and then putting a % sign at the end of the number we get:.0325 = 3.25%

8. Practice Problems : Write each percent as a decimal. a. 82% b. 325% Answer/Discussion to a 82% Dropping the percent sign and then moving the decimal two places to the left we get: 82% =. 82 Answer/Discussion to b 325% Dropping the percent sign and then moving the decimal two places to the left we get: 325% = 3.25

9. Practice Problems: Write each decimal as a percent. a..64 b..0003 Answer/Discussion to a.64 Moving the decimal place two to the right and then putting a % sign at the end of the number we get:.64 = 64% Answer/Discussion to b.0003 Moving the decimal place two to the right and then putting a % sign at the end of the number we get:.0003 =.03%

10. Basic Math: Percent by Open University Malaysia is licensed under a Creative Commons Attribution-Noncommercial 3.0 Unported License. Based on a work at http://oer.oum.edu.my. Permissions beyond the scope of this license may be available at http://www.oum.edu.my.Open University MalaysiaCreative Commons Attribution-Noncommercial 3.0 Unported Licensehttp://oer.oum.edu.myhttp://www.oum.edu.my