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Ratios, proportions, and percents

-Write decimals as percentages
- Write percentages as decimals
- Write percentages as fractions
- Write fractions as percentages
- Percent of a number
- Percent of money amounts
- Percent of a number: word problems
- Find what percent one number is of another
- Compare percentages
- Percent of change
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Write decimals as percentages

To write a decimal as a percent, multiply it by 100, then add on the % symbol.

How do you write 0.4 as a percentage?

Multiply the decimal by 100. Move the decimal point two places to the right.

0.4 × 100 = 40

Write the result as a percentage: 40%

How do you write 9.87 as a percentage?

Solution: %