MSM07G6_RESBK_Ch05_019-026.pe
1/11/06
3:27 PM
Page 20
Name
Date
Class
Practice B
LESSON
5-3 Adding and Subtracting Mixed Numbers
Find each sum or difference. Write the answer in simplest form.
3
1
2
1. 48 54
1
4
7
1
1
5
1
1
8. 54 1
11
13
44
4
6
3
14
10. 15
12
8
222
4
3
1
4
11. 5
15
10
5
19
91
0
503
5
2
2
14. 15 1
10
1
13. 35 13
11
3
1
15. 35 22
1
1
5
41
5
3
4
16. 64 31
0
11
0
1
1
17. 45 2
10
9
1
18. 322 53
9
32
0
2
12. 257 255
7
12
4
3
9. 216 18
5
1
156
7
173
7
3
1
1
6. 124 5
12
182
1
7. 293 146
3
5
109
5. 327 143
51
2
2
2
31
5
4. 226 174
1
1
3. 73 39
1
5
98
5
1
2. 115 83
5
61
0
376
1
19. Donald is making a party mix. He bought 24 pounds of pecans
1
and 35 pounds of walnuts. How many pounds of nuts did
Donald buy in all?
9
52
pounds
0
4
20. Mrs. Watson’s cookie recipe calls for 37 cups of sugar.
2
Mr. Clark’s cookie recipe calls for 43 cups of sugar.
How much more sugar does Mr. Clark’s recipe use?
5
2
12
cups more
1
1
21. Tasha’s cat weighs 151
lb. Naomi’s cat weighs 113 lb. Can
2
they bring both of their cats to the vet in a carrier that can hold
up to 27 pounds? Explain.
Yes; because the cats’ combined weight is 263 pounds,
4
which is less the 27 pounds
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
20
Holt Mathematics
Practice B
5-3 Adding and Subtracting Mixed Numbers
Practice A
5-3 Adding and Subtracting Mixed Numbers
LESSON
LESSON
Estimate each sum or difference to the nearest whole number.
1
1
1
1. 25 14
4
3
1
Find each sum or difference. Write the answer in simplest form.
1
2. 36 15
1
5
3
2
4. 12 24
5
1
1
5
1
3
1
1
1
8. 105 81
0
3
2
1
10. 36 13
61
2
5
1
1
1
7
82
4
7
1
16. 21
18
2
1
1
17. 46 19
1
1
18. 37 33
17
31
8
1
62
1
1
20. 55 12
1
21. 23 25
9
41
5
32
4
2
19. 13 12
1
6
1
1
1
11
0
1
17. 45 21
0
1
18. 322 53
9
61
0
5
376
9
52
pounds
0
Donald buy in all?
4
21 feet
12
3
1
15. 35 22
1
4
2
19
503
5
1
23. Bonita planted an oak tree and an
elm tree in her backyard. Three years
1
later, the oak tree was 56 feet tall,
1
and the elm tree was 72 feet tall.
How much taller was the elm tree?
711 hours
1
12. 257 255
1
5
3
3
19. Donald is making a party mix. He bought 24 pounds of pecans
1
and 35 pounds of walnuts. How many pounds of nuts did
8
22. Jack babysat for 44 hours on Friday
2
night. He babysat for 33 hours on
Saturday night. How many hours did
he babysit in all?
3
2
2
14. 15 11
0
9
32
0
1
61
0
13
222
4
1
7
91
0
16. 64 3
10
10
9. 216 18
4
11. 5
15
10
11
41
5
1
1
173
7
6
3
3
1
6. 124 5
12
5
44
4
3
2
1
13. 35 13
1
15. 78 16
3
28
5
106
2
1
14. 122 108
1
8. 54 11
1
5
12
4
53
1
13. 82 23
1
7
1
11
2
2
5
5
182
1
10. 151
148
2
2
1
1
12. 4
15
5
2
1
11. 103 94
2
109
4
1
156
1
22
1
3. 73 39
5. 327 143
7. 293 146
5
9. 34 26
1
44
1
7
51
2
0
1
1
31
5
4. 226 174
Find each sum or difference. Write the answer in simplest form.
1
2
2. 115 83
5
98
6. 17 18
1
7. 12 34
1
1. 48 54
2
5. 23 16
4
3
3. 42 28
20. Mrs. Watson’s cookie recipe calls for 37 cups of sugar.
2
Mr. Clark’s cookie recipe calls for 43 cups of sugar.
How much more sugar does Mr. Clark’s recipe use?
5
2
12
cups more
1
1
lb. Naomi’s cat weighs 11 lb. Can
21. Tasha’s cat weighs 1512
3
they bring both of their cats to the vet in a carrier that can hold
up to 27 pounds? Explain.
Yes; because the cats’ combined weight is 263 pounds,
3
4
which is less the 27 pounds
19
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
Holt Mathematics
Practice C
5-3 Adding and Subtracting Mixed Numbers
LESSON
Add or subtract. Write each answer in simplest form.
1
2
1
9
1
14
8
3
7
2
5. 118 51
2
17
72
6
7
2
4
8. 5
16
5
1
27
2
2
39
28
12
12
67
12
6.3
12. 19
25
7
31
183
5
9
18.7
13. 23
10
9
1
11. 85 1.5
3
91
0
135
0
1
14. 11.42 25
1
67
12
85
7
pounds at the
16. Mattie’s camping gear and food weighed 24
15 2
beginning of the weekend. His food weighed 109 pounds. After
Mattie ate all of his food, how much did his gear weigh?
11
144
pounds
5
17. Cindy and Tara are saving money to buy a present for their
1
teacher that costs $37.50. So far, Cindy has saved 154 dollars,
4
and Tara has saved 115 dollars. How much more do they
$10.45
need to buy the present?
5
512
16
7
1
1
So, 34 23 51
.
2
So, 42 23 16.
1
1
1. 14 12
Copyright © by Holt, Rinehart and Winston.
5
more
Holt Mathematics
1
1
1
4. 43 12
9
17
8 2
3
13
3 2
17
36
8 8
9
26
6 6
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
87
1
3. 28 42
19
10
6 6
1
3
5. 25 110
1
2
5
19
6 3
3
24
miles; 63 miles
1
2. 36 13
5
6
4 4
7
21
2
5
3
4 2
31
0
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
1
Find each sum or difference. Write your answer in simplest form.
1
18. Terry rode her bike for 156 miles last week. This week she
1
rode her bike for 212 miles. How many miles did Terry ride
her bike during these two weeks? How many more miles
2
363
did she ride her bike during the second week?
11
6
7
4
115
0
27
16
6
6
11
6
Write the answer as a mixed number in simplest form.
17
4.05
15. 12
20
23
55
9
8
2
3
27
16
6 6
Then add or subtract the like fractions.
Evaluate. Write each answer as a fraction in simplest form.
10. 177 1.6
2
9
8
2 3
13
7
4
3
39
28
12
12
17
18
0
1
B. 42 23
Next, find equivalent fractions with a least common denominator.
1
1
9. 18 19
3
18
4
1
13
7
4 3
17
68
1
1
7. 21
1
2
14
1
A. 34 23
1
3
6. 4
13
2
5
201
8
To find the sum or difference of mixed numbers, first write the mixed
numbers as improper fractions.
5
13
4
4. 66 149
You can use what you know about improper fractions to add and
subtract mixed numbers.
1
1
3. 26 1
16
31
105
0
5
10
2. 32 1
17
Holt Mathematics
Reteach
5-3 Adding and Subtracting Mixed Numbers
LESSON
1. 81
2
0
25
20
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
5
46
1
1
6. 36 1
12
1
5
68
56
5
1
7. 28 14
2
1
8. 53 24
3
44
18
22
5
5
31
2
Holt Mathematics
Holt Mathematics