Percent

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Percent
Chapter 5
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5.1

• Understanding Percent

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Denominators of 100
The word percent means per hundred. A percent
is another way to describe a part of a whole.
7 out of 100 of the rectangles are shaded. 7
percent of the whole is shaded.
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Denominators of 100
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Writing Percents as Decimals
Percents can be written as fractions and decimals.

• Changing a Percent to a Decimal
• Drop the symbol.
• Move the decimal point two places to the left.

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Writing Percents as Decimals
Example Write 19 as a decimal.
19 19.
.
0.19
Example Write 2.67 as a decimal.
An extra zero is added to the left of the 2.
2.67 2.67
.
0.0267
Example Write 0.23 as a decimal.
Two extra zeroes are added to the left of the 2.
0.23 0.23
.
0.0023
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Writing Decimals as Percents

• Changing a Decimal to a Percent
• Move the decimal point two places to the right.
• Add the symbol at the end of the number.

Example Write 0.25 as a percent.
.
0.25 0.25
25
Example Write 3.95 as a percent.
.
3.95 3.95
395