Unit 9.2 - Converting "Easy" Fractions To Decimals And Percents Examples And Worksheets Page 5
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8Study Link Master
Name
Date
Time
STUDY LINK
Coins as Percents of $1
Math Boxes 9 2
INDEPENDENT
9 2
38 39
ACTIVITY
_
1
100
100
(Math Journal 2, p. 254)
1.
How many pennies in $1?
What fraction of $1 is 1 penny?
0.01
Write the decimal that shows what part of $1 is 1 penny.
1
What percent of $1 is 1 penny?
%
_
_
Mixed Practice Math Boxes in this lesson are paired
1
5
, or
20
20
100
2.
How many nickels in $1?
What fraction of $1 is 1 nickel?
0.05
with Math Boxes in Lesson 9-4. The skill in Problem 6
Write the decimal that shows what part of $1 is 1 nickel.
5
What percent of $1 is 1 nickel?
%
_
_
previews Unit 10 content.
1
, or
10
10
10
100
3.
How many dimes in $1?
What fraction of $1 is 1 dime?
0.10
Write the decimal that shows what part of $1 is 1 dime.
Writing/Reasoning Have students write a response to the
10
What percent of $1 is 1 dime?
%
_
_
1
25
following: Suppose you tripled the lengths of the sides of the
, or
4
4
100
4.
How many quarters in $1?
What fraction of $1 is 1 quarter?
0.25
rectangle in Problem 5. What would happen to the area of the
Write the decimal that shows what part of $1 is 1 quarter.
25
What percent of $1 is 1 quarter?
%
_
_
rectangle?
Sample answer: The area of the new rectangle would be
1
50
, or
2
2
100
5.
How many half-dollars in $1?
What fraction of $1 is 1 half-dollar?
2
0.50
252 in
. It would be 9 times as large as the area of the original
Write the decimal that shows what part of $1 is 1 half-dollar.
50
What percent of $1 is 1 half-dollar?
%
rectangle.
_
3
_
2
6.
Three quarters (75¢) is
of $1.
7.
Two dimes (20¢) is
of $1.
4
10
0.75
0.20
Write the decimal.
Write the decimal.
What percent of $1 is
What percent of $1 is
75
20
3 quarters?
%
2 dimes?
%
Study Link 9 2
INDEPENDENT
ACTIVITY
Practice
4,488
4,590
25,284
(Math Masters, p. 282)
= 748 º 6
51 º 90 =
= 28 º 903
8.
9.
10.
Home Connection For each of several coins, students
Math Masters, p. 282
identify what fraction of $1, decimal part of $1, and
278-303_EMCS_B_MM_G4_U09_576965.indd 282
2/1/11 2:36 PM
percent of $1 that coin represents.
3
Differentiation Options
PARTNER
READINESS
ACTIVITY
Exploring Percent Patterns
5–15 Min
(Math Masters, p. 283)
To explore the relationship between fractions and percents, have
Teaching Master
students identify and use patterns to solve percent problems. Ask
Name
Date
Time
students to describe how they used the patterns. For example:
LESSON
Percent Patterns
9 2
If there are 20 per 100, then there are
Complete each set of statements. Use grids or base -10 blocks,
or draw pictures to help you. Look for patterns in your answers.
Example:
1 _
1 _
2 per 10. 10 is
of 100.
of 20 is 2, so 20 per 100 is the
50% is the same as 50 per 100.
10
10
If there are 50 per 100, then there are
same as 2 per 10.
5
500
per 10.
per 1,000.
10
100
200 per 1,000. 1,000 is 10 times as much as 100. 10 times 20
per 20.
per 200.
1.
2.
20% is the same as 20 per 100.
30% is the same as 30 per 100.
is 200, so 20 per 100 is the same as 200 per 1,000.
If there are 20 per 100, then there are
If there are 30 per 100, then there are
3
300
2
200
per 10.
per 1,000.
per 10.
per 1,000.
2 _
20
200
1 _
1 _
_
_
4 per 20.
,
,
are all names for
. 4 is
of 20, so 4 per
6
60
4
40
per 20.
per 200.
per 20.
per 200.
10
100
1,000
5
5
20 is the same as 20 per 100.
3.
4.
80% is the same as 80 per 100.
60% is the same as 60 per 100.
If there are 80 per 100, then there are
If there are 60 per 100, then there are
40
=
1 _
8
800
6
600
_
40 per 200.
per 10.
per 1,000.
per 10.
per 1,000.
200
5
16
160
12
120
per 20.
per 200.
per 20.
per 200.
Try This
5.
6.
75% is the same as 75 per 100.
120% is the same as 120 per 100.
If there are 75 per 100, then there are
If there are 120 per 100, then there are
7.5
750
12
1,200
per 10.
per 1,000.
per 10.
per 1,000.
15
150
24
240
per 20.
per 200.
per 20.
per 200.
Math Masters, p. 283
278-303_EMCS_B_MM_G4_U09_576965.indd 283
2/1/11 2:36 PM
732
Unit 9 Fractions, Decimals, and Percents
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