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Envision Math 2.0: Grade 6, Volume 2

EM

Envision Math 2.0: Grade 6, Volume 2 View details

Review

Exercise 1 Page 378

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: 4/25
Percent: 16 %

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. 0.16=0.16/1Then, 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.

0.16/1

a/b=a * 100/b * 100

0.16* 100/1* 100

Multiply

16/100

a/b=.a / 4./.b / 4.

16÷ 4/100÷ 4

Calculate quotient

4/25

We found that 0.04 expressed as a fraction is 16100, or 425.

Percent

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

We found that 0.16 expressed as a percent is 16 %.

Subchapter links

Topic Essential Question p.377

Vocabulary Review p.377

Use Vocabulary in Writing p.377

1 Understand Percent p.378

2 Relate Fractions, Decimals, and Percents p.378

3 Represent Percents Greater Than 100 or Less Than 1 p.379

4 Estimate to Find Percent p.379

5 Find the Percent of a Number p.380

6 Find the Whole Given a Part and the Percent p.380