Changing Decimals to Percents
To change a decimal to a percent, move the decimal point two places to the right and affix the % sign.
Math Note: If the decimal is located at the end of the number, do not write it.
Examples
Example 1
Write 0.78 as a percent.
Solution 1
0.78 = 78%
Example 2
Write 0.02 as a percent.
Solution 2
0.02 = 2%
Example 3
Write 1.29 as a percent.
Solution 3
1.29 = 129%
Example 4
Write 0.682 as a percent.
Solution 4
0.682 = 68.2%
Example 5
Write 0.0051 as a percent.
Solution 5
0.0051 = 0.51%
Example 6
Write 8 as a percent.
Solution 6
8 = 8.00 = 800%
Changing Decimals to Percents Practice Problems
Practice
Write each of the following decimals as percents:
1. 0.09
2. 0.91
3. 0.375
4. 0.0042
5. 3
Answers
1. 9%
2. 91%
3. 37.5%
4. 0.42%
5. 300%
Practice problems for these concepts can be found at: Percent Practice Test.
Excerpted From:
From Pre-Algebra Demystified: A Self-Teaching Guide. Copyright © 2004 by The McGraw-Hill Companies, Inc. All Rights Reserved.
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