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- Place value
- Comparing and ordering decimals
- Rounding to a place
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- Adding decimals
- Subtracting decimals
- Multiplying decimals
- Dividing decimals
- Converting decimals to fractions
- Converting decimals to percents
- Converting between decimals, fractions and percents
- Ordering decimals, fractions and percents

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- Understanding fractions
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- Multiplying fractions
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- Converting fractions to decimals
- Converting fractions to percents
- Converting between fractions, decimals and percents
- Ordering fractions, decimals and percents

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Writing a **percentage **as a **decimal** is very useful for quick percentage calculations. For example 32% of 420 is calculated by 0.32 x 420. On this page you will learn how to answer questions like:

- What is 20% as a decimal?
- What is 125% as a decimal?

This slide show will show how, and why, we can write a percentage as a decimal:

This is a video showing how to convert a percent to a decimal number and back again:

Changing a percentage to a decimal number is a simple as taking off the percent sign and moving the decimal point two places to the left! For example, 32.8% = .328, and 29% = .29!

Study and practice

- Study converting percents to decimalsRead about how to convert a percent to a decimal number at mathsisfun.com, then try a few problems on your own.
- Download a percent-to-decimal conversion worksheetDesign and print a percent-to-decimal conversion worksheet at math-aids.com. (Under "Types of Conversion Problems", tick "Percent to Decimal.")