Homework Helper Lesson 2 Estimate Products of Fractions

Name
Number and Operations – Fractions
5.NF.4, 5.NF.4a, 5.NF.6
Lesson 2
Estimate Products
of Fractions
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Homework Helper
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Find the estimated area of the floor rug shown.
5
1
Estimate 6_ × 3_.
6
6
Round each mixed number to the nearest
whole number.
1
6 6 ft
5
1
Round 6 _ down to 6. Round 3_ up to 4.
6
6
5
1
6 _ × 3_ ≈ 6 × 4
6
6
≈ 24
5
3 6 ft
So, the area of the floor rug is about 24 square feet.
Practice
Estimate each product. Draw a bar diagram if necessary.
Copyright © The McGraw-Hill Companies, Inc. Ingram Publishing/Fotosearch
2
1. _ × 26
3
5
7
2. _ × _
8
6
5
1
3. 5_ × 8_
5
6
Lesson 2 My Homework717
Problem Solving
Use the table to answer Exercises 4 and 5.
3
4.
Students with Pets
Number Fraction of Students
of Pets
with Pets
Justify Conclusions The
table shows the results of a class survey
about pets. Suppose 53 students were
surveyed. About how many students have
one pet? Justify your answer.
1
_
0
1
2 or more
20
1
_
2
9
_
20
5. If 100 students are surveyed, about how many students own
2 or more pets? Explain.
3
1
6. A rectangular floor measures 10_ feet by 13_ feet. If Mary buys
4
8
150 square feet of carpet, will she have enough carpet to cover
the floor?
Test Practice
7. A cup of water holds about 8 ounces. If a
1
recipe calls for _ cup of water, which is the
3
A
1 ounce
C
6 ounces
B
3 ounces
D
8 ounces
718Need more practice? Download Extra Practice at
0717_0718_Gr5_S_C10L2HW_116196.indd
Copyright © The McGraw-Hill Companies, Inc.
best estimate of the number of ounces that
are needed? Draw a bar diagram if necessary.
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718
1/22/13
Program: GMH CCM
Component: SE
Vendor: Quad Graphics
Grade: 5
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