Lesson 7-5 Pages 312-315
Fractions,
Decimals, and
Percents
What you will learn!
How to write percents as
fractions, and vice versa.
(Introduced in Chapter 5)
What you really need to know!
In lesson 5-5, you wrote
percents like 32% as fractions by
writing fractions with
denominators of 100 and then
simplifying. You can use the
same method to write percents
like 16.8% and 8 1/3 % as
fractions.
What you really need to know!
1.Divide by 100 to
remove a % sign.
2.Multiply by 100 to
attach a % sign.
Example 1:
In a recent poll, 41.8% of the
people surveyed said they
gained nutrition knowledge
from family and friends.
What fraction is this? Write
in simplest form.
41.8  100
0.418
418
1000
209
500
8
4
41 % 41 %
10
5
209
4
41  100
5
500
Example 2:
Write 12 ½ % as a fraction
in simplest form.
1
12
2
100
1
12  100
2
25 1

2 100
1
8
1 1

2 4
Example 3:
In one shipment of fruit
to a grocery store, 5 out
of 8 bananas were still
green. Find this
amount as a percent.
5
x100
8
1
1
n  62 62 %
2
2
5  8 0.625
0.625100
62.5%
Example 4:
Write 5/12 as a percent.
Round to the nearest
hundredth.
5  12 0.416
0.416100
41.67%
Example 5:
Write 9/20 as a percent.
9
 100
20
45%
9  20 0.45
0 45 45%
Example 5:
Write 3/7 as a percent.
Round to the nearest
hundredth.
37
0.4285714
0 4285714
42.86%
Page 314
Guided Practice
#’s 4-12
Read:
Pages 312-314
with someone at
home and study
examples!
Homework: Page 314-315
#’s 13-39
#’s 41-51
Lesson Check 7-5
Page
581
Lesson 7-5
Lesson Check 7-5