#21

Percents, Decimals, and Fractions

Example 1: Writing Decimals as PercentsWrite the decimal as a percent.Method 1: Use place value.0.7

Example 2: Writing Decimals as PercentsWrite the decimal as a percent.Method 2: Multiply by 100.0.4118

Example 3Write the decimal as a percent.0.023

Example 4Write the decimal as a percent.0.018

Example 5Write the decimal as a percent.0.957

When the denominator is a factor of 100, it is often easier to use method 1. When the denominator is not a factor of 100, it is usually easier to use method 2.

Helpful Hint

Example 6: Writing Fractions as Percents

925

__

Write the fraction as a percent.Method 1: Write an equivalent fraction with a denominator of 100.

Example 7: Writing Fractions as Percents

320

__

Method 2: Use division to write the fraction as a decimal.

Example 8Write the fraction as a percent.

750

__

Example 9Write the fraction as a percent.

1150 __

Example 10: Real-World ApplicationOne year, of people with home officeswere self-employed. What percent of people with home offices were self employed?

725

__

Example 11During the soccer season, of Evan’s teammates scored a goal. What percent of Evan’s teammates scored a goal?

920 __

Example 12Jo spends of her time at the gym doing stretches to warm up. What percent of Jo’s time at the gym does she spend stretching?

15

__

Example 13George wants of the calories he eats to come from protein. What percent of George’s calories should come from protein?

25

__

The number line below shows common equivalent fractions, decimals, and percents.

F.Y.I.