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Envision Math 2.0: Grade 6, Volume 2

EM

Envision Math 2.0: Grade 6, Volume 2 View details

4. Estimate to Find Percent

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Exercise 15 Page 359

Round each number and multiply.

About 160

Practice makes perfect

We want to estimate 4 % of 802. We will start by rounding each number. c|c 4is closer to5 & 802is closer to800 than to10 & than to805 ⇓ & ⇓ 4 % ≈ 5 % & 802≈ 800 Now we multiply the rounded numbers to get an estimation. First, we write the percent as a fraction.

5 %* 800

Write as a fraction

5/100 * 800

a/b=.a / 5./.b / 5.

5÷ 5/100÷ 5 * 800

Calculate quotient

1/20 * 800

MoveRightFacToNumOne

1/b* a = a/b

800/5

Calculate quotient

160

We found that 4 % of 802 is about 160.

Subchapter links

Do You Understand? p.358

Do You Know How? p.358

Practice & Problem Solving p.359-360

Assessment Practice p.360