Math 40
Prealgebra
Chapter 1- HOMEWORK
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13. 3 < 8
or
3>8
15. 59 < 24
or
17. 0 < 74
or
19. 1 < 81
or
59 > 24
14. 44 < 80
Answers
or
16. 15 < 11
or
15 > 11
0 > 74
18. 11 < 18
or
11 > 18
1 > 81
20. 65 < 83
or
21. 43 < 1 or 43 > 1
22. 62 < 2 or
23. 43 < 28
24. 73 < 21
or
44 > 80
43 > 28
65 > 83
62 > 2
or
73 > 21
25. thousands column 2,054,867,372?
26. hundreds column 2,318,999,087?
1
2015 Worrel
Math 40
Prealgebra
Chapter 1- HOMEWORK
Answers
27. hundred thousands column 8,311,900,272?
28. tens column 1,143,676,212?
29. hundred millions column 9,482,616,000?
30. hundreds column 375,518,067?
31.
ten millions column 5,840,596,473?
32. hundred thousands column 6,125,412,255?
33. hundred millions column 5,577,422,501?
34. thousands column 8,884,966,835?
35. tens column 2,461,717,362?
36. ten millions column 9,672,482,548?
37. 93, 857 to the nearest thousand.
94,000
38. 56, 872 to the nearest thousand.
57,000
39. 9, 725 to the nearest ten.
9,730
40. 6, 815 to the nearest ten.
6,820
41. 58, 739 to the nearest hundred.
58,700
42. 93, 146 to the nearest hundred.
93,100
43. 2, 358 to the nearest ten.
2,360
44. 8, 957 to the nearest ten.
8,960
45. 39, 756 to the nearest thousand.
40,000
46. 24, 965 to the nearest thousand.
25,000
47. 5, 894 to the nearest ten.
5,890
48. 3, 281 to the nearest ten.
3,280
2
2015 Worrel
Math 40
Prealgebra
Chapter 1- HOMEWORK
49. 56, 123 to the nearest hundred.
56,100
50. 49, 635 to the nearest hundred.
49,600
51. 5, 483 to the nearest ten.
5,480
52. 9, 862 to the nearest ten.
9,860
Answers
53. 304,100,000 people
54. 36,800,000 people
55. 130,000 people
56. 690,000 people
Section 1.2
1. Identity
3. Identity
5. Associative
7. Commutative
9. Associative
11. Identity
13. Commutative
15. Commutative
17. Associative
2. Identity
4. Identity
6. Associative
8. Commutative
10. Associative
12. Identity
14. Commutative
16. Commutative
18. Associative
19. 10
21. 29
23. 18
25. 11
27. 10
29. 18
20. 19
22. 15
24. 11
26. 28
28. 27
30. 21
31. 32 in
33. 34 in
35. 20cm
37. 22 cm
32. 20 in
34. 28 in
36. 26 in
38. 26 in
39. 100 cm
41. 64 cm
40. 84 in
42. 12 in
3
2015 Worrel
Math 40
Prealgebra
Chapter 1- HOMEWORK
43. 40 in
45. 28 in
44. 72 in
46. 80 in
47. 8222
49. 1688
51. 1567
53. 1728
55. 9175
57. 1543
59. 1727
61. 2300
63. 1151
65. 723
48. 6891
50. 1919
52. 1152
54. 1395
56. 15,293
58. 2128
60. 2190
62. 2733
64. 2554
66. 691
67. 1232
69. 972
71. 600
73. 3302
75. 728
77. 816
79. 1089
81. 4777
83. 6869
68. 57
70. 933
72. 275
74. 6638
76. 1178
78. 1652
80. 881
82. 211
84. 3627
Answers
85. $518 million
86. $ 664 billion
87. $738
88. 5 million kilometers
89. 23 billion kilometers
90. 3,700 degrees cooler
91. 65 people
92. 1,845 tigers
Section 1.3
1. Commutative
3. Associative
5. Commutative
7. Associative
9. Identity
11. Identity
2. Commutative
4. Associative
6. Commutative
8. Associative
10. Identity
12. Identity
4
2015 Worrel
Math 40
Prealgebra
Chapter 1- HOMEWORK
13. 234
15. 5,442
17. 3,840
19. 47,940
21. 980
23. 3,060
14. 406
16. 34,720
18. 40,860
20. 18,140
22. 8,460
24. 1,740
25. 12,798
27. 8,292
29. 84,995
31. 16,226
33. 26,645
35. 54,435
26. 54,802
28. 63,371
30. 29,274
32. 11,346
34. 13,677
36. 6,567
37. 1250 in²
39. 611 in²
38. 1152 in²
40. 190 in²
41. 82 in
43. 116 in
42. 104 in
44. 132 in
Answers
45. $ 9.50
46. $ 4.20
47. $ 705
48. $ 506
49. 288 eggs
50. 132 eggs
51. 20,000 kilograms
52. 8,000 pounds
53. 0
55. undefined
57. 0
59. undefined
61. 0
63. 0
65. undetermined
54. 0
56. undefined
58. 0
60. undefined
62. 0
64. 0
66. undetermined
67. 64
69. 27
71. 44
73. 89
75. 15
77. 95
68. 54
70. 28
72. 78
74. 17
76. 77
78. 69
5
2015 Worrel
Math 40
Prealgebra
79. 193
81. 629
83. 564
85. 937
87. 426
89. 921
Chapter 1- HOMEWORK
Answers
80. 572
82. 544
84. 674
86. 924
88. 412
90. 538
91. 22 blocks
92. 36 blocks
93. 8 trips
94. 12 trips
95. 146 lights
96. 227 lights
97. 73 blocks
98. 89 blocks
99. 11 trips
100. 10 trips
101. 101 lights
102. 151 lights
103. 20 articles
104. 2400 rounds
105. 1350 yards
106. 4380 pounds
107. $ 34,800
108. $ 3,750,000
109. 2,992 meters squared
110. $ 2,560
Section 1.4
1. { 1, 2 3, 5, 6, 10, 15, 30 }
3. { 1, 83 }
5. { 1, 7, 13, 91 }
7. { 1, 3, 5, 15, 25, 75 }
9. { 1, 2, 4, 8, 16, 32, 64 }
11. { 1, 2, 7, 14 }
13. 117
15. 13
17. 105
19. 31
2. { 1, 19 }
4. { 1, 3, 17, 51}
6. { 1, 7, 49 }
8. { 1, 67 }
10. { 1, 3, 29, 87 }
12. { 1, 89 }
14. 157
16. 193
18. 23
20. 63
6
2015 Worrel
Math 40
Prealgebra
Chapter 1- HOMEWORK
21. 364
23. 550
25. 820
27. 493
22. 850
24. 895
26. 352
28. 181
29. 3797
31. 9701
33. 7517
35. 1685
30. 7177
32. 1685
34. 8157
36. 2545
37. 9896
39. 8758
41. 2363
43. 1269
38. 2442
40. 2543
42. 1238
44. 7871
45. 328
47. 538
49. 586
50. 658
46. 148
48. 964
50. 262
52. 742
53. 5418
55. 8506
57. 2594
59. 7850
54. 2826
56. 2626
58. 9050
60. 9338
61. 991
63. 937
65. 928
67. 676
62. 919
64. 343
66. 307
68. 38
69. Prime
71. Prime
73. Composite
75. Composite
77. Composite
79. Prime
70. Composite
72. Composite
74. Prime
76. Composite
78. Composite
80. Composite
81. 2⁵ ∙ 7
83. 2² ∙ 3³
85. 3⁵
87. 2 ⁵ ∙ 5
89. 2⁵
91. 2³ ∙ 3² ∙ 5
82. 2⁶ ∙ 5
84. 2⁵ ∙ 3
86. 2²∙3⁴
88. 2² ∙ 3² ∙ 7
90. 2⁷
92. 2³ ∙ 3²
Answers
7
2015 Worrel
Math 40
Prealgebra
Chapter 1- HOMEWORK
93. 2⁴ ∙ 3²
95. 2⁴ ∙ 3
97. 2³ ∙ 3³
94. 2⁶
96. 2³ ∙ 5²
98. 2³ ∙ 7²
99. 100
101. 0
103. 0
105. 4
107. 64
109. 27
100. 32
102. 1
104. 108
106. 25
108. 16
110. 200
111. 784 in²
113. 484 in²
112. 961 in²
114. 169 in²
115. 2² ∙ 3
117. 3 ∙ 5 ∙ 7
119. 2³ ∙ 7
121. 2³ ∙ 3²
116. 2 ∙ 3²
118. 2 ∙ 5 ∙ 7
120. 2⁴ ∙ 3
122. 2 ∙ 3³ ∙ 5
Section 1.5
1. 9
3. 9
5. 22
7. 42
9. 15
11. 16
Answers
2. 21
4. 16
6. 73
8. 82
10. 39
12. 14
13. 75
15. 108
17. 45
19. 3
21. 266
23. 208
25. 19
27. 161
14. 80
16. 1520
18. 27
20. 20
22. 280
24. 164
26. 19
28. 301
29. 10
31. 3797
33. 9701
35. 7517
37. 1685
39. 99
30. 15
32. 78
34. 3
36. 38
38. 20
40. 113
8
2015 Worrel
Math 40
Prealgebra
Chapter 1- HOMEWORK
41. 443
43. 367
45. 1
47. 9
49. 296
51. 279
53. 24
55. 186
42. 174
44. 391
46. 6
48. 1
50. 256
52. 363
54. 92
56. 528
57. 9
59. 36
61. 35
63. 7
65. 376
67. 1203
58. 16
60. 64
62. 641
64. 8
66. 101
68. 197
69. 1
71. 8
73. 28
75. 38
77. 51
79. 47
70. 14
72. 53
74. 121
76. 13
78. 93
80. 25
81. 4
83. 1
85. 5
87. 31
89. 4
91. 2
82. 3
84. 1
86. 2
88. 9
90. 3
92. 1
93. 60
95. 35
97. 30
99. 20
94. 48
96. 16
98. 8
100. 60
101. 558
103. 174
102. 228
104. 399
Section 1.6
1. 10
3. 4
Answers
2. 16
4. 6
9
2015 Worrel
Math 40
Prealgebra
Chapter 1- HOMEWORK
5. 1
7. 11
9. 1
11. 14
6. 3
8. 13
10. 4
12. 11
13. 1
15. 1
17. 4
19. 1
21. 22
23. 19
25. 14
27. 2
29. 26
31. 3
33. 7
35. 15
37. 6
39. 7
41. 28
43. 6
45. 17
47. 18
49. 12
51. 28
14. 13
16. 2
18. 8
20. 3
22. 13
24. 28
26. 35
28. 15
30. 18
32. 6
34. 4
36. 17
38. 12
40. 23
42. 1
44. 11
46. 24
48. 5
50. 24
Answers
52. 31
53. 20
54. 29 ft.
55. 28 ft.
56. $ 6,150
57. $ 1,100
58. 10
59. 16
60. $ 1,120
61. $ 1,630
62. 154,000 more foreclosure notices
63. $ 266,500
64. 25,000 ft.
65. 24,500 acres
Section 1.7
10
2015 Worrel
Math 40
Prealgebra
Chapter 1- HOMEWORK
1. 24
3. 6
5. 2
7. 5
9. 1
11. 56
2. 42
4. 45
6. 9
8. 1
10. 2
12. 28
13. 42
15. 8
17. 9
19. 6
21. 36
23. 1
25. 6
27. 12
29. 72
31. 56
33. 4
35. 40
14. 56
16. 5
18. 0
20. 2
22. 30
24. 5
26. 7
28. 36
30. 16
32. 24
34. 3
36. 20
Answers
37. 13 bookcases
38. 10 computers
39. 6
40. 24
41. 2,320 points
42. 3,828 points
43. 45
44. 18
45. w = 8 cm
46. w = 11 cm
47. w = 7 cm
48. w = 11 cm
49. 14 stereos
50. 12 computers
51. 2,590 points
52. 3,872 points
53. 4
54. 7
55. 7
56. 5
11
2015 Worrel