In the last Concept, you saw how Casey could convert percents to decimals. We are going to use the same situation in this Concept. Take a look.

Casey has moved from milk to organic vegetables. She has heard of a CSA - community supported agriculture and is wondering how many people actually belong to a CSA. She surveyed the 90 students in her class and found that 30% of the students belong to a CSA. That means that 70% don't belong to one.

If Casey wanted to write these percents as fractions how could she do it? Do you know?

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Yes, this Concept is all about converting percents to fractions. By the end of this Concept, you will know how to complete this task.
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### Guidance

A percent is also related to a
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fraction
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because they are both parts of a whole. Just like we could write percents as decimals, we can also write percents as fractions.

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How do we write a percent as a fraction?
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To write a percent as a fraction, we have to think of it as “out of 100” once again. A fraction is a ratio comparing certain quantities. Six out of 10 would be written as six-tenths. The ten becomes our denominator.

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We can use this information to write a percent as a fraction.
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Write as a fraction.

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44% means 44 out of 100. 44 becomes the numerator and 100 becomes the denominator.
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Our answer is
.
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What about when we have a percent that doesn’t have two places, like 7%?
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To convert to a fraction, you simply write it over 100. Because 7 percent means 7 out of 100.

Practice writing percents as fractions.

#### Example A

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Solution:
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#### Example B

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Solution:
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#### Example C

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Solution:
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Now back to Casey. Here is the original problem once again.

Casey has moved from milk to organic vegetables. She has heard of a CSA - community supported agriculture and is wondering how many people actually belong to a CSA. She surveyed the 90 students in her class and found that 30% of the students belong to a CSA. That means that 70% don't belong to one.

If Casey wanted to write these percents as fractions how could she do it? Do you know?

To convert the percent to a fraction, we need to use a denominator of 100 instead of a percent sign.

We can also simplify these fractions.

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This completes our work.
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### Guided Practice

Here is one for you to try on your own.

Write the following percent as a fraction.

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Answer
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We know that the % sign means "out of 100" therefore, 100 is our denominator.

95 is the part out of 100, so that is our numerator.

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Our answer is
.
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### Video Review

Here are videos for review.

Khan Academy, Percent and Decimals

James Sousa, Introduction to Percent

### Explore More

Directions: Write each percent as a fraction.

1. 54%

2. 11%

3. 6%

4. 12%

5. 89%

6. 83%

7. 19%

8. 4%

9. 9%

10. 18%

11. 89%

12. 100%

13. 23%

14. 77%

15. 98%

16. 2%