Multiplying Fractions With Models Worksheets With Answer Key Page 32
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39Find the area of the triangle.
examPle 3
3 in
5 in
s
1 _
1 _
× base × height
olution
Area =
Area =
× 5 × 3
2
2
5 _
3 _
Change the whole numbers into fractions.
5 =
and 3 =
1
1
1 _
5 _
3 _
15 __
Multiply.
Area =
×
×
=
2
1
1
2
15 __
1 _
Simplify.
Area =
= 7
2
2
_
_
1
1
The area of the triangle is 7
square inches or 7
in².
2
2
exercises
use the given measurements to find the area of each rectangle.
1.
2.
3.
2 units
1 __
2
units
1 __
3
units
4
2
5 units
3 __
3
units
3 units
4
4.
5.
6.
1 __
in
4
7 __
in
3 __
1
in
8
8
1 __
1
in
2
5 __
in
8
3 __
in
4
7.
A carpet layer measured the floor in a room to be carpeted. The room
1 _
3 _
was 20
ft long and 18
ft wide. What is the area of the floor in this
3
4
room?
use the given measurement to find the area of each square.
8.
9.
10.
1 __
2
units
3
4 units
11.
12.
3 __
in
3
1 __
1
in
4
8
_
1
6
in
2
99
Lesson 20 ~ Area With Fractions
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