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Envision Math 2.0: Grade 7, Volume 1

EM

Envision Math 2.0: Grade 7, Volume 1 View details

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Exercise 5 Page 135

To write a decimal as a fraction, write the number as the numerator and 1 as the denominator. Then find an equivalent fraction with a whole number numerator. To write a decimal as a percent, multiply by 100 and add the percent symbol.

Example Fraction: 29/100
Percent: 29 %

Practice makes perfect

Fractions, decimals, and percents are three ways to show parts of a whole. We want to write a decimal as a fraction and as a percent. Let's do these things one at a time.

Fraction

To write a decimal as a fraction, we start by writing the number as the numerator and 1 as the denominator. 0.29=0.29/1Then, we can find an equivalent fraction with a whole number numerator. It is usually easiest to multiply by a power of 10 and then simplify.

0.29/1

a/b=a * 100/b * 100

0.29* 100/1* 100

Multiply

29/100

We found that 0.29 expressed as a fraction is 29100.

Percent

To write a decimal as a percent, we multiply by 100 and add the percent symbol %.

We found that 0.29 expressed as a percent is 29 %.

Subchapter links

Review What You Know! p.135