Conversion Guide for Fractions, Decimals and Percent

The three most common ways to describe are parts of a whole are fractions, decimals and percent.

Fractions are often used in recipes or in carpentry to express measurements units, such as use ½ cup of sugar, or make the cut ¼ inch deep.

Decimals are often used when we describe amounts of money, in the metric system and often in scientific notations.

Percents are often used in statistics and in business for working out areas like profits.

Here’s a handy guide for making basic conversions among the three descriptions.

 

Fraction Decimal Percent
1/100 0.01 1%
1/20 0.05 5%
1/10 0.1 10%
1/5 0.2 20%
1/4 0.25 25%
3/10 0.3 30%
2/5 0.4 40%
1/2 0.5 50%
3/5 0.6 60%
7/10 0.7 70%
3/4 0.75 75%
4/5 0.8 80%
9/10 0.9 90%
1 1.0 100%
2 2.0 200%
10 10.0 1,000%
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