Convert Percents to Decimals and Fractions
It's very simple to convert a percent to a decimal (and from there, it's easy to convert a decimal to a fraction!)
- Convert your percent to a decimal (if necessary) by dividing the percent by 100 (shortcut: move the decimal two places to the left-- or away from the percent sign). Remember, if you do not see a decimal point, it's right behind the last number. Write it in if it helps you.
- Remove the percent sign.
Example:
Turn 35% into a decimal.
$\eqalign{35\% &= 35.\%\\35.\% \div100 &= .35}$
Turn 2.1% into a decimal.
$\eqalign{2.1\% \div100 &= .021}$
If you want a fraction answer, the next step is to turn your decimal into a fraction.
- Read the decimal aloud, using place value names.
- Using the place value names, rewrite the decimal as a fraction.
- Reduce.
Example:
Turn 35% into a fraction.
$$\eqalign{35\% &= 35.\%\\35.\% \div100 &= .35\\.35&=\text{thirty-five hundredths}\\ \text{thirty-five hundredths} &=\dfrac{35}{100}\\ &= \dfrac{7}{20}}$$
Practice Problems:
Convert Fractions and Decimals to Percents
Write the decimal as a percent.
1. $0.95$
2. $0.004$
3. $5.36$
4. $0.183$
5. $2.17$
6. $3.2$
7. $0.057$
8. $7.237$
9. $0.039$
10. $0.09$
11. $4.1$
12. $0.7$
Write the fraction as a percent.
1. $\frac{5}{8}$
2. $\frac{3}{2}$
3. $\frac{1}{80}$
4. $\frac{3}{20}$
5. $\frac{31}{10}$
6. $\frac{4}{800}$
7. $\frac{4}{50}$
8. $\frac{117}{200}$
9. $\frac{7}{16}$
10. $\frac{45}{50}$
11. $\frac{2}{9}$
12. $\frac{30}{40}$
Answer Key: