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Percents and Fractions

Now

B E F O R E

W H Y ?

You multiplied fractions and

You’ll use a fraction to find

So you can write a percent for a

whole numbers.

the percent of a number.

movie category, as in Ex. 40.

In the Real World

In October of 2001, 16 of

Word Watch

Tennis

the top 100 women’s tennis players

percent, p. 415

were from the United States. What

percent of the players were not

from the United States? You’ll find

the answer in Example 4.

The word percent means “per hundred.”

A

percent

is a ratio whose denominator

is 100. The symbol for percent is %.

Understanding Percent

The model at the right has 16 out of

16 percent

100 squares shaded. You can say that

16 percent of the squares are shaded.

Numbers You can write 16 percent as

1

6

or as 16%.

1

0

0

p

Algebra You can write p percent as

1

00

or as p%.

1

Writing Percents as Fractions

E X A M P L E

Write the percent as a fraction.

a. 37%

b. 50%

Solution

3

7

5

0

1

a. 37%

b. 50%

1

0

0

1

0

0

2

Y

Write the percent as a fraction in simplest form.

our turn now

1. 24%

2. 55%

3. 87%

4. 12%

415

Lesson 9.1

Percents and Fractions

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Parent category: Education