MSM07G7_RESBK_Ch03_086-093.pe
12/29/05
9:01 PM
Page 88
Name
Date
Class
Practice C
LESSON
3-11 Dividing Fractions and Mixed Numbers
Divide. Write each answer in simplest form.
4
2. 23 7
1
617
9
11
5. 14
21
33
15
3
6. 19
8
5
3
5
2
12
2
3
11
7. 25
15
21
9
5
5
8. 39
13
9
55
7
14
9. 17
17
1
1
2
3
4
8
10. 57 9
5
2
5
12. 1611 6
11. 79 11
3
16
121
4
6
3
7
14. 98 28
7
32
3
195
5
3
3
15. 55 18
6
22
7
7
23
174
5
13. 87 37
2
2
325
11
7
4. 9
15
5
3. 39 11
1
384
3
7
5
1. 17 9
1
16. 9 8 3
4
45
5
3
1
2
17. 5 44 5
2
6
17
16
2
1
2
7
18. 33 7 9
1
162
3
19. Jorge can mow 1 lawn in 4 hour. How many lawns can he
3
mow in 34 hours?
5 lawns
1
1
20. How many 22-foot shelves can you cut from a 172-foot board?
7 shelves
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88
Holt Mathematics
2.3 CRB 4-up 103-127
12/29/05
9:02 PM
Page 124
Practice C
LESSON
3-11 Dividing Fractions and Mixed Numbers
Practice B
LESSON
3-11 Dividing Fractions and Mixed Numbers
Divide. Write each answer in simplest form.
Divide. Write each answer in simplest form.
1
1. 4 2
1
1
2. 5 4
8
2
4. 9 3
3
3
5. 8 4
1
13
1
384
3
7
6. 1
5
0
7
11
4. 9
15
1
2
2
5
7. 5
12
3
7
9. 1
4
2
3
11
7. 2
5
15
7
9
9
55
11
11
6
1
1
10. 46 3
1
2
11. 34 5
1
122
2
21
9
14
7
9. 17
17
5
5
8. 3
1
9
3
1
3
1
2
8
5
11. 79 11
5
2
12. 1611 6
16
174
5
3
14. 34 26
5
15. 53 15
4
13. 87 37
14. 98 28
7
15. 55 18
2
17
11
13
4
26
22
7
7
22
7
6
32
3
4
45
5
1
3
1
3
16. 22 23
1
1
2
17. 14 14
1
11
4
3
2
7
1
16. 9 8 3
1
18. 73 15
2
15
6
23
1955
13. 24 14
1
5
15
3
6. 19
8
5
12
2
3
1214
2
363
2
617
9
11
5. 1
21
4
3
4
10. 57 9
1
1
12. 69 6
1
88
7
3. 39 11
1
325
33
3
5
1
16
3
4
8. 4 9
1
12
4
5
2. 23 7
5
9
4
5
8
4
1. 17 9
1
3
3. 3 5
3
1
2
17. 5 44 5
16
2
1
7
618
3
3
2
2
7
18. 33 7 9
6
17
1
162
3
2
19. Jorge can mow 1 lawn in 4 hour. How many lawns can he
3
mow in 34 hours?
19. Burger Barn has 463 pounds of ground beef. How many
1
-pound burgers can be made using all the ground beef?
3
5 lawns
140 burgers
1
1
20. How many 22-foot shelves can you cut from a 172-foot board?
20. Roberto needs some roofing tiles to be cut from a large tile.
3
How many tiles that are each 148 inches in length can he cut
5
from a larger piece of tile that is 1008 inches long?
7 shelves
7 tiles
87
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Holt Mathematics
The value of each division expression will show the average life
expectancy of an animal. Complete the chart. Then use the
information to fill in the blanks below.
Dividing fractions and mixed numbers is very much like multiplying
fractions and mixed numbers. Just follow these steps:
Step 1: Write any mixed numbers as improper fractions.
Step 2: Invert the divisor.
Step 3: Multiply and write the quotient in simplest form.
1.
1
1
Divide: 14 33
1
1
5
10
Step 1: 14 33 4 3
3
5
10
5
Step 2: 4 3 4 • 10
5
15
3
3
Step 3: 4 • 1
40
8
0
2.
3.
4.
2
8
3
6
1
3
5
7
5
4. 23 15 3 5 3 • 6
3
7
2
2
10
7
8
6
40
18
1
3
3
5. 5 1
0
1
7
1
6. 8 3
20
9
5
2
9
Black bear
1
5
22 3
6
18
Chimpanzee
1
2
405 25
0
20
Dog
1
7
152 12
4
12
Hippopotamus
7
3
48 6
4
40
Mouse
Guinea pig
5
2
3
3
5
18
7.
Tiger
24 32 224
8.
Kangaroo
共
3
共 兲 共
1
Life Expectancy (yr)
1
共
兲
9
4
兲
16
兲
3
7
13
4
8
56
7
1
10 ,
9. If you divide the average life span of a guinea pig by
you get the average life span of a hippopotamus.
1
5
7. 1
2
2
5
28
2
8
Division Expression
6.
3
4
3. 22 14 2 4 2 • 7
20
14
30
5
5
5
2. 8 6 8 • 5
40
4
Animal
5
5
18
6
5.
Divide. Write each answer in simplest form.
4
1
4
1. 5 2 5 • 1
1
5
5
Holt Mathematics
Challenge
LESSON
3-11 Animal Senior Citizens
Reteach
LESSON
3-11 Dividing Fractions and Mixed Numbers
1
1
Divide: 18 3
1
1
9
1
Step 1: 18 3 8 3
9
1
9 3
Step 2: 8 3 8 • 1
9 3
27
3
Step 3: 8 • 1 8 38
88
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7
10. If you divide the average life span of a kangaroo by 2
,
0
you find the average life span of a horse, which is 20 years .
5
6
hippopotamus can live 37 years longer than a
1
3
mouse
. This is 52 24 years longer than the
38 years
life expectancy of an African elephant, which is
11. A
8. 43 19
1
1
9. 23 14
9
13
31
0
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All rights reserved.
1
3
10. 58 22
5
1
1
24
1
89
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All rights reserved.
.
3
2
12. (Average life expectancy of a dog) 8 65 (average life
5
years
expectancy of a rabbit) .
Holt Mathematics
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All rights reserved.
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90
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Holt Mathematics