Similar to fractions and decimals, percent shows a part of a whole. Percent is expressed as “out of 100”. For example 60100=35=60%=0.6.
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Conversion: Decimal to Percent
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To change a decimal into a percent, move the decimal point two places to the RIGHT and add a percent sign “%”.
Example 1 – Express each of the following decimals as a percent
a) 0.25 | b) 12.3 | c) 1.3 |
d) 0.375 | e) 0.0002 | f) 11 |
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Conversion: Percent to Decimal
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To change a percent into decimal, move the decimal point two places to the LEFT and remove the percent sign “%”.
Example 2 – Express each of the following percent as a decimal
a) 15% | b) 8.7% | c) 1.24% |
d) 0.10% | e) 650% | f) 0.002% |
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Conversion: Fraction to Percent
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There are two ways to change a fraction to percent:
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Method 1: Find a fraction of 100%, simply multiply the fraction by 100%, and reduce as necessary.
Example 3 – Convert each of the following fractions into percents
a) 35 | b) 27 | c) 910 |
d) 425 | e) 56 | f) 38 |
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Conversion: Fraction to Percent
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There are two ways to change a fraction to percent:
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Method 2: Convert to decimal first and then move the decimal point to convert to percent
Example 4 – Convert each of the following fractions into percents
a) 35 | b) 27 | c) 910 |
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Conversion: Percent to Fraction
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