4-6 Fractions and Percents

Main Idea/Vocabulary

• ratio• percent

• Write fractions as percents and percents as fractions.

4-6 Fractions and Percents

Ratio A comparison of two quantities by division . When a ratio compares a number to 100, it can be written as a percent.

4-6 Fractions and Percents

Writing Ratio as %

•45 out of 100 cars are sold

45%

•$3.30:$100

3.3%

4-6 Fractions and Percents

4-6 Fractions and Percents

Writing Fraction as a percent

You can write a faction as a percent by finding an equivalent fraction with a denominator of 100.

What you do to the denominator, you must do to the numerator to find the equivalent fraction.

4-6 Fractions and Percents

Writing Fraction as a percent

1010

252

20

3

100100

1008

100

15 15%

8%

100%

4-6 Fractions and Percents

Writing Percent as a fraction

To write a percent as a fraction, place the number over 100, and simplify.