0015 0016 Gr5 S C01L1HW 115024 - Team...
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eHelp Copyright © The McGraw-Hill Companies, Inc. Name Need help? connectED.mcgraw-hill.com Practice Add. Write each sum in simplest form. 1. 5 _ 8 + 3 _ 10 = 2. 3 _ 5 + 1 _ 4 = 3. 4 _ 7 + 1 _ 8 = Lesson 5 Add Unlike Fractions Homework Helper Find 1 _ 6 + 1 _ 4 . Write equivalent, like fractions using the least common denominator, LCD. The LCD of 1 _ 6 and 1 _ 4 is 12. 1 _ 6 + 1 _ 4 = 1 × 2 _ 6 × 2 + 1 × 3 _ 4 × 3 = 2 _ 12 + 3 _ 12 = 2 + 3 _ 12 , or 5 _ 12 So, 1 _ 6 + 1 _ 4 = 5 _ 12 . Check The models show that 1 _ 6 + 1 _ 4 = 5 _ 12 . Write equivalent fractions using the LCD. Multiply. Add like fractions. 1 6 1 12 1 12 1 12 1 12 1 12 1 4 1 4 37 _ 40 17 _ 20 39 _ 56 Lesson 5 My Homework641 Number and Operations — Fractions 5.NF.1, 5.NF.2
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Practice
Add. Write each sum in simplest form.
1. 5 _ 8 + 3 _
10 = 2. 3 _
5 + 1 _
4 = 3. 4 _
7 + 1 _
8 =
Lesson 5
Add Unlike Fractions
Homework Helper
Find 1 _ 6 + 1 _
4 .
Write equivalent, like fractions using the least common
denominator, LCD. The LCD of 1 _ 6 and 1 _
4 is 12.
1 _ 6 + 1 _
4 =
1 × 2 _ 6 × 2 + 1 × 3 _
4 × 3
= 2 _ 12
+ 3 _ 12
= 2 + 3 _ 12
, or 5 _ 12
So, 1 _ 6 + 1 _
4 = 5 _
12 .
Check The models show that 1 _ 6 + 1 _
4 = 5 _
12 .
Write equivalent fractions using the LCD.
Multiply.
Add like fractions.
16
112
112
112
112
112
1414
37 _ 40 17 _ 20 39 _ 56
Program: GMH CCM Component: SEPDF Pass
Vendor: Quad Graphics Grade: 5
Lesson 5 My Homework�641
Number and Operations — Fractions
5.NF.1, 5.NF.2
0641_0642_Gr5_S_C09L5HW_116196.indd 6410641_0642_Gr5_S_C09L5HW_116196.indd 641 9/30/11 2:09 PM9/30/11 2:09 PM
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Test Practice 8. Which expression will have the same sum as 3 _
8 + 1 _
4 ?
A 3 _ 8 + 1 _
8 C 3 _
4 + 1 _
4
B ( 1 _ 8 + 1 _
8 + 1 _
8 ) + 1 _
4 D (
1 _ 8 + 1 _
8 ) + 1 _
8
Problem Solving 4. Tashia ate 1 _
3 of a pizza, and Jay ate 3 _
8 of the same
pizza. What fraction of the pizza was eaten?
5. Basir took a science test on Friday. One-eighth of the questions were multiple choice, and 3 _
4 of the
questions were true-false questions. What part of the total number of questions are either multiple choice or true-false questions?
6. 2 Use Number Sense Edison delivers 1 _ 5 of the newspapers in the neighborhood, and Anita
delivers 1 _ 2 of them. Together, Edison and Anita deliver
what fraction of the newpapers?
7. Dylan and Sonia are hiking different trails. If Dylan hiked Riverwalk and Mountainview, and Sonia hiked Mountainview and Pine, how many miles dideach of them hike?
Hiking Trails
Trail Distance (mi)
Riverwalk 3 _ 4
Mountainview 1 _ 2
Pine 3 _ 5
Dylan: 1 1 _ 4 miles; Sonia: 1 1 _ 10 miles
17 _ 24 pizza
7 _ 10 of the newspapers
7 _ 8 of the questions
642�Need more practice? Download Extra Practice at connectED.mcgraw-hill.com
Program: GMH CCM Component: SEPDF Pass
Vendor: Quad Graphics Grade: 5
0641_0642_Gr5_S_C09L5HW_116196.indd 6420641_0642_Gr5_S_C09L5HW_116196.indd 642 9/30/11 2:12 PM9/30/11 2:12 PM
