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Watch the video for this workbook at www.wem.mb.ca/learning_on_demand.aspx
Companion Workbook to Numeracy: The Basics Video Series
NUMERAC Y:The Basics Workbook
Set H: Operations with Mixed Fractions 2
AC
KN
OW
LED
GM
EN
TS
i Set H: Operations with Mixed Fraction 2
Workplace Education Manitoba would like to express appreciation to the following for supporting the development of this curriculum:
The Government of Canada Human Resource Skills Development Canada (HRSDC)
and
The Manitoba Government
Industry Workforce Development (IWD), Entrepreneurship, Training and Trade (ETT)
Workplace Education Manitoba would also like to thank the individuals from across Manitoba who provided consultation, content, and feedback.
For more information, visit www.wem.mb.ca
or contact the Project Coordinator Lindsay Laidlaw at [email protected]
Workplace Education Manitoba
1000 Waverley Street Winnipeg, MB, R3T 0P3
©Workplace Education Manitoba, 2012 All rights reserved; no part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical, photocopying, recording, or otherwise without prior written permission of the Publishers. This manual may not be lent, resold, hired out or otherwise disposed by way of trade in any form of binding or cover than that which it is published, without the prior consent of the Publishers.
1
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2
INTRODUCTION
What is Numeracy: The Basics Workbook?
This workbook is intended to accompany Workplace Education Manitoba’s (WEM) Numeracy: The
Basics Video Series, a set of 50 videos that explain essential numeracy concepts.
The refresher videos cover 25 critical numeracy topics, each broken into concept and practice.
The video series and accompanying downloadable workbooks can be found on the WEM website at
http://www.wem.mb.ca/learning_on_demand.aspx
These Numeracy: The Basics workbooks provide an opportunity for additional skill-building practice.
Numeracy: The Basics topics are:
Order of Operations 1
Order of Operations 2
Adding & Subtracting Fractions 1
Adding & Subtracting Fractions 2
Multiplying & Dividing Fractions
Mixed & Improper Fractions
Operations with Mixed Fractions 1
Operations with Mixed Fractions 2
Operations with Mixed Fractions 3
Adding & Subtracting Decimals
Multiplying Decimals
Dividing Decimals
Order of Operations & Decimals
Decimals, Fractions & Percent 1
Decimals, Fractions & Percent 2
Imperial Conversions
Metric Conversions
Metric and Imperial Conversions
Geometry 1 – Perimeter
Geometry 2 – Area
Geometry 3- Volume
Solving Equations 1
Solving Equations 2
Ratio & Proportion
Averages
2
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2
OPERATIONS WITH MIXED FRACTIONS 2
This workbook contains five skill-building practice sections. Solutions can be found at the end of the
workbook.
Practice Section A
Calculate the following. Express your answer as a mixed fraction in lowest terms.
1. 1 1
12 2 =
2. 1 1
18 2 =
3. 1 7
22 8 =
4. 5 5
18 8 =
5. 1 3
1 24 8 =
6. 1 3
1 12 4 =
7. 1 7
2 18 8 =
8. 3 1
2 38 2 =
9. 1 1
2 34 2 =
10. 1
1 64 =
11. 1
1 84 =
3
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2
12. 3 9
14 16 =
13. 3
2 14
=
14. 3
3 18
=
15. 1 7
2 1 14 16
=
Practice Section B
Calculate the following. Express your answer as a mixed fraction in lowest terms.
1. 1 7
3 22 8 =
2. 3 5
2 14 8 =
3. 3 1
2 14 2 =
4. 13 1
4 316 4
=
5. 1 3
4 18 16 =
6. 1 7
4 12 8 =
7. 5 3
3 216 8
=
8. 3 9
5 24 16 =
4
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2
9. 3 7
4 34 8 =
10. 11 27
5 216 32
=
11. 1 11
2 38 16 =
12. 3 7 3
2 2 44 16 8 =
13. 7 5 1
3 1 48 16 2 =
14. 1 1
4 4 34 16
=
15. 3 7 1
6 4 232 8 4
=
Practice Section C
Calculate the following. Express your answer in lowest terms.
1. 1 3 11
12 2 2 4 24 8 16
=
2. 3 11 17 7 3
2 1 2 1 2 14 16 32 8 4 =
3. 3 7 1 1 1
6 4 2 2 4 3232 8 4 4 2
=
4. 3 7 1 1 1
6 4 2 2 4 3232 8 4 4 2
=
5. 1 3 7 1 1 1 11
2 5 4 3 2 4 6 44 16 8 8 4 2 32
=
5
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2
Practice Section D
In this section, solutions for the practice questions contain commonly-made errors. For each question,
circle the error(s) and give a correct solution.
1. Calculate the answer by performing the correct order of operations.
Express your answer as a mixed fraction in lowest terms.
Solution:
5 3 11 75 2 3 1
8 4 16 2
5 4 16 75 2 3 1
8 3 11 2
5 8 2 5 3 3 4 11 1 16 7
1 8 3 11 2
5 21 13 27 7
1 8 3 11 2
3 (6)5
1
21 13
8 (1) 3
27 7
11 (1) 2
5 3 13 27 7
8 11
36855
88
2. Alex says that 1 7 3 7 3 7 1
3 6 1 6 1 32 8 4 16 4 8 4
.
Donna says that Alex must be wrong because she already calculated that 3 7 1
6 1 34 8 4
.
Who is correct? Prove your answer with calculations.
6
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2
Practice Section E
Challenge Question. If you can do this one, then you get an A+.
Calculate the answer by following the correct order of operations. Give your answer as a mixed fraction
in lowest terms.
1 1 3 5 7 1 1 1 11
4 2 5 5 4 3 2 4 6 4 62 4 16 8 8 8 4 2 32
=
7
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NUMERACY: The Basics Workbook
SOLUTIONS
Set H Operations with Mixed Fractions 2
8
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2 Solutions
OPERATIONS WITH MIXED FRACTIONS 2
Practice Section A
1. Solution:
1 11
2 2
2 1 1 1
2 2
3 1
2 2
3
4
2. Solution:
1 11
8 2
8 1 1 2
8 1
9 2
8 1
18
8
9 12
4 4
3. Solution:
1 72
2 8
2 2 1 7
2 8
5 7
2 8
35 32
16 16
4. Solution:
5 51
8 8
8 1 5 8
8 5
13
(1) 8
(1) 8
5
13 32
5 5
5. Solution:
1 31 2
4 8
4 1 1 8 2 3
4 8
5 19
4 8
95 312
32 32
6. Solution:
1 31 1
2 4
2 1 1 4 1 3
2 4
3 7
2 4
21 52
8 8
9
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2 Solutions
7. Solution:
1 72 1
8 8
8 2 1 8
8 8 1 7
17 8
8 15
17
(1) 8
(1) 8
15
17 21
15 15
8. Solution:
3 12 3
8 2
8 2 3 2 3 1
8 2
19 7
8 2
133 58
16 16
9. Solution:
1 12 3
4 2
4 2 1 2
4 2 3 1
9 2
4 7
9
(2) 4
(1) 2
7
9
14
10. Solution:
11 6
4
4 1 1 6
4 1
5
2 4
3 6
1
15 17
2 2
11. Solution:
11 8
4
4 1 1 8
4 1
5 1
4 8
5
32
12. Solution:
3 91
4 16
4 1 3 16
4 9
7 16
4 9
112 4 13 3
36 36 9
10
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2 Solutions
13. Solution:
32 1
4
2 4
1 4 1 3
2 4
1 7
8 11
7 7
14. Solution:
33 1
8
3 8 1 3
1 8
3 11
1 8
33 14
8 8
15. Solution:
1 72 1 1
4 16
2 4 16 1 7
1 4 1 1 16
2 4 23
1 5 16
(1) 2
(1) 4
1
23
5 (2) (4)
16
23
5 2
23 32
10 10
11
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2 Solutions
Practice Section B
1. Solution:
1 73 2
2 8
2 3 1 8
2 8 2 7
7 8
2 23
7
(1) 2
(4) 8
23
7 4
23
28 51
23 23
2. Solution:
3 52 1
4 8
4 2 3 8 1 5
4 8
11 13
4 8
143 154
32 32
3. Solution:
3 12 1
4 2
4 2 3 2 1 1
4 2
11 3
4 2
33 14
8 8
4. Solution:
13 14 3
16 4
16 4 13 4 3 1
16 4
77 13
16 4
1001 4115
64 64
5. Solution:
1 34 1
8 16
8 4 1 16 1 3
8 16
33
1 8
2 16
19
66 93
19 19
6. Solution:
1 74 1
2 8
2 4 1 8 1 7
2 8
9 15
2 8
135 78
16 16
12
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2 Solutions
7. Solution:
5 33 2
16 8
16 3 5 8 2 3
16 8
53 19
16 8
1007 1117
128 128
8. Solution:
3 95 2
4 16
4 5 3 16
4 16 2 9
23 16
4 41
23
1 4
4 16
41
92 102
41 41
9. Solution:
3 74 3
4 8
4 4 3 8
4 8 3 7
19 8
4 31
19
(1) 4
2 8
31
38 71
31 31
10. Solution:
11 275 2
16 32
16 5 11 8
16 32 2 27
91 32
16 91
(1) 91
(1)16
2 32
(1) 91
2
11. Solution:
1 112 3
8 16
8 2 1 11 3
8 16 1
17
(1) 8
2 16
3
11 1
17 2 3
1 11 1
102 39
11 11
12. Solution:
3 7 32 2 4
4 16 8
4 2 3 16 2 7 8
4 16 8 4 3
11 39
4 2 16
(1) 8
35
429 1491
280 280
13
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2 Solutions
13. Solution:
7 5 13 1 4
8 16 2
8 3 7 16 2
8 16 1 5 2 4 1
31
(1) 8
2 16
2
21 9
124
189
14. Solution:
1 14 4 3
4 16
4 4 4 1 16
1 4 16 3 1
(1) 4
17
1 (1) 4
16
49
272 275
49 49
15. Solution:
3 7 16 4 2
32 8 4
32 6 3 8 4 7 4
32 8 4 2 1
195 39 4
32 8 9
195 39
32 2 8
(1) 4
9
195 39
32 18
195
16 32
9 18
39
1755 507 132 2
624 624 16
14
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2 Solutions
Practice Section C
1. Solution:
1 3 1112 2 2 4 2
4 8 16
12 4 8 2 3 16 1
1 4 2 1 8 16 4 11 2
4 12
2 4
1 3 9
19
(1) 8
2 16
1
75 (1) 2
4 2 19 2
3 75
304 791
225 225
2. Solution:
3 11 17 7 32 1 2 1 2 1
4 16 32 8 4
4 2 3 16 1 11 32 8 1 7 1 4
4 16 32 2 17 8 2 4 1 3
11
(1) 4
(1) 27
(1)16
(1) 2
32
(1) 3 81
5 15
1
8 (1) 2
(1) 4
7
11 5
8 7
55
56
15
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2 Solutions
3. Solution:
3 7 1 1 16 4 2 2 4 32
32 8 4 4 2
32 6 3 8 4 4 2 32
32 8 4 7 4 2 1 4 2 1 2 4 1 1
195 8 4 4 2 32
32 39 9 9 9 1
5 195
(1) 32
8
1 39
4 4 2 (1) 32
9 9 9
1
5 8 4 4 2
9 9 9
1280 5511
729 729
4. Solution:
3 7 1 1 16 4 2 2 4 32
32 8 4 4 2
32 6 3 8 4 7 4 4 2 1 2 32
32 8 4 2 1 4 2 4 1 1
195 39 4 9 2 32
32 8 9 4 9 1
195 39
32 (2) 8
(1) 4
(1) 9
9
(2) 4
(1) 2
(1) 9
32
1
195 39 1 32
32 18 2 1
195 18 2 32
32 39 1 1
(5)195
(1) 32
18
(1) 39
2 (1) 32
1
1
180
16
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2 Solutions
5. Solution:
1 3 7 1 1 1 112 5 4 3 2 4 6 4
4 16 8 8 4 2 32
4 2 1 16 8 4 7 8 3 1 4 2 4 1 6 32
4 16 5 3 8 8 4 2 1 2 1 32 4 11
9 16 39 25 4 9 6 32
4 83 8 8 9 2 1 139
9
(1) 4
(4)16
39 25
83 8 (2) 8
(1) 4
9
9 (1) 2
(3) 6
32
1 139
36 39 25 864
83 8 18 139
36 39 18 139
83 8 25 864
(1) (9)
36 39
83 (1) (4)
8
(9)18
139
25 96 864
39 9 139
83 25 96
48789 1504114
199200 199200
17
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2 Solutions
Practice Section D
1. Solution:
In line 2, the two mixed fractions that are divided, 3
34
and 11
116
, were flipped before being
changed to improper fractions. There is also an error made in line 5 when reducing the fractions
where 21 3 6 instead of 7.
The correct answer is:
5 3 11 75 2 3 1
8 4 16 2
5 8 2 5 4 16 7
1 8 4 3 3 16 1 11 2
5 21 4 16 7
1 8 15 27 2
(1) 5
(7) 21
1
(1) 8
(2) 4
(1) (3) 15
(2)16
7
27 (1) 2
7 2 2 7
27
196 77
27 27
2. Solution:
Alex is incorrect because the expression does not equal 3. (See below.)
Donna is correct in saying that 3 7 1
6 1 34 8 4
, but this does not mean that Alex must be
wrong.
The correct answer is:
18
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NUMERACY: The Basics Workbook Set H: Operations With Mixed Fractions 2 Solutions
1 7 3 7 3 7 13 6 1 6 1
2 8 4 16 4 8 4
2 3 1 1 7 4 1 3 16 6 4 1 3 8 1
2 6 8 4 7 1 4 7 4
7 1 7 7 16 6 7 8 1
2 6 8 4 7 1 4 7 4
7
(1) 2
1 7
6 (1) 8
(1) 7
(1) (2)
4
16
(1) 7
(3) 6
(1) 7
1
(1) (2) 4
(1) (2)
8
(1) 7
1
(1) 4
7 73
6 4
49 3 24
24 1 24
49 72
24
23
24
Practice Section E
Solution:
1 1 3 5 7 1 1 1 114 2 5 5 4 3 2 4 6 4 6
2 4 16 8 8 8 4 2 32
2 4 1 4 2 1 16 8 1 8 4 7 8 3 1 4 2 4 1 6 32 6
2 4 16 5 3 5 5 8 8 4 2 1 2 1 32 4 11 1
9 9 16 8 1
2 4 83 5 5
39 25 4 9 6 32 6
8 8 9 2 1 139 1
9
(1) 2
9
(1) 4
(2) (4)
16 8 1 39 25
83 5 5 8 (2) 8
(1) 4
9
9 (1) 2
(3) 6
32 6
1 139 1
162 8 1 39 18 864 6
83 5 5 8 25 139 1
162 (1) 8
83
1 39
5 5 (1) 8
18 864 6
25 139 1
589545216 548459181
7210625 7210625
This is the simplest form for this fraction.