Lesson 7-7 Pages 319-321

Percent of a number

Lesson Check 7-6

What you will learn!

How to find the percent of a number.

PercentPercentBaseBasePartPart

What you really need to know!

You can use a proportion or an equation to find the percent of a number.

What you really need to know!

The percent proportion can be written as:

100

(%)

)(

)(

baseof

partis

What you really need to know!

The percent equation can be written as:

(is)part(of)base 100

%

Example 1:

Out of 1,423 adults surveyed, 30% said they knew the name of their mail carrier. How many of the people surveyed knew their mail carrier’s name?

100

30

423,1

m423,130100 m

690,42100 m9.426m

About 427

30% of 1,423 is how much?

Example 1: Percent Equation Method:

m 1,423 100

30

m 1,423 .30

m 9.426 About 427

What number is 120% of 24?

Example 2:

100

120

24

m

100

120

24

mm10024120

m100880,2 m8.2828.8

What number is 120% of 24?

Example 2:

m 24 100

120

m 24 1.2

m 8.28

Find 25% of $600.Example 3:

100

25

600

m

100

25

600

mm10060025

m100000,15 m150$150

Find 25% of $600.Example 3:

m 600 100

25

m 600 25.

m 150$

Page 320

Guided Practice

#’s 4-8

Pages 319-320 with someone at home and study

examples!

Read:

Homework: Page 321

#’s 9-23 all

#’s 25-35

Lesson Check 7-7

Page

582

Lesson 7-7

Lesson Check 7-7