math 40 prealgebra section 5.1-5.7 homework key · 2019-05-30 · math 40 prealgebra section...

Math 40

Prealgebra Section 5.1-5.7 HOMEWORK KEY

1 2015 Worrel

Section 5.1

1. 4,552.0908 2. 7,881.6127

3. 4,408.2148 4. 9,279.0075

5. 2,709.5097 6. 1,743.1634

7. 3,501.4456 8. 9,214.3625

9. 5,705.2193 10. 7,135.2755

11. 8,129.3075 12 6,971.4289

13. Nine thousand, eight hundred thirty-seven ten-thousandths

14. Six thousand, eight hundred seventy-nine ten-thousandths

15. One thousand, nine hundred two and two thousand six hundred fifty-three ten-thousandths

16. One hundred sixty-seven and eight thousand nine hundred thirty-four ten-thousandths

17. Nine hundred twenty-five and forty-seven hundredths

18. Nine hundred seventy-four and thirty-five hundredths

19. Eighty-three and four hundred twenty-seven thousandths

20. Thirty-two and seven hundred fifty-nine thousandths

21. Sixty-three and seven hundred twenty-nine thousandths

22. Eighty-five and three hundred twenty-seven thousandths

23. Eight hundred twenty-six and fifty-seven hundredths

24. Three hundred eighty-four and seventy-two hundredths

25. 87

10 26.

31

10

27. 547

100 28.

527

100

29. 2133

1000 30.

2893

1000

31. 39

10 32.

1271

1000

Math 40


2 2015 Worrel

33. 7

20 34.

19

50

35. 3

50 36.

21

25

37. 49

50 38.

22

25

39. 18

25 40.

39

50

41. 79.37 42. 54.80

43. 71.243 44. 59.213

45. 29.4 46. 42.8

47. 89.303 48. 9.005

49. 20.7 50. 54.0

51. 19.85 52. 49.40

53. 0.30387617 0.3036562 54. 8.5934 8.554

55. 0.034 0.040493 56. 0.081284 0.08118

57. 8.3527 8.36553 58. 0.00786 0.0051385

59. 18.62192 18.6293549 60. 514.873553 514.86374

61. 36.8298 36.8266595 62. 0.000681 0.00043174

63. 15.188392 15.187157 64. 0.049785 0.012916

65.

Material Index

of

Refracti

on

Vacuum 1.0000

Air 1.0003

Ice 1.31

Water 1.333

Plexiglas 1.51

Crown Glass 1.52

Zircon 1.923

Diamond 2.417

Math 40


3 2015 Worrel

Section 5.2

1. 116.6 2. 17.09

3. 101.18 4. 5.089

5. 91.502 6. 121.49

7. 103.45 8. 25.7

9. 58.641 10. 37.896

11. 6.86 12. 47.9

13. 6.739 14. 90.87

15. 74.9 16. 3.126

17. 52.372 18. 3.08

19. 54.575 20. 6.23

21. 35.3 22. 4.51

23. 5.98 24. 6.575

25. −26.13 26. −87.8

27. − 70.72 28. − 31.04

29. −90.914 30. −14.61

31. 1.643 32. 70.91

33. −42.8 34. −85.5

35. −41.1 36. −2.25

37. − .51 38. − 9.01

39. −8.504 40. −6.88

41. −6.47 42. −5 2 . 6 7

43. 77.72 44. 14.4

45. 7.501 46. −23.53

Math 40


4 2015 Worrel

47. − 2.201 48. − 7.421

49. − .39 50. − 80.64

51. −6.895 52. −101.84

53. −58.27 54. −31.285

55. −54.983 56. −43.07

57. −4.314 58. 70.037

59. 4.365 60. 6.853

61. 10.062 62. 117.679

63. −105.75 64. −5.467

65. −47.04 66. 1.16

67. 12.37 68. −2.7

69. −37.96 70. −2.19

71. 19.75 72. 23.87

73. −19.85 74. −18.5

75. 8.96 76. 27.3

77. −24.99 78. −2.34

79. 17.13 80. 5.42

81. $328.3 Billion 82. 3.6 ft

83. 32.9 degrees fahrenheit

84. 33.3 degrees fahrenheit

85. 2.6 billion

86. .07 million tons

87. .04 million people

Math 40


5 2015 Worrel

Section 5.3

1. .201 2. .48

3. 170.51 4. 70.35

5. 18.86 6. 21.32

7. 30.12 8. 12.84

9. 6.282 10. .0844

11. 190.491 12. 58.354

13. 42.57 14. 12.28

15. 66.33 16. 43.92

17. 154.05 18. 386.26

19. 2.07 20. 5.39

21. 134.493 22. 52.1152

23. .0696 24. .3584

25. 20.234 26. 11.844

27. 30.876 28. 10.237

29. −.6587 30. −1.78

31. 6.66 32. −.345

33. −30.34 34. 49.5

35. −88.452 36. −58.468

37. − 16.64 38. −10.12

39. 31.44 40. −2.308

41. −1.262 42. 40.88

43. −281.48 44. −216.63

45. −3,899.75 46. 187.96

Math 40


6 2015 Worrel

47. 149.28 48. 195.16

49. .175 50. .065

51. −.204 52. .748

53. −42.955 54. −8.148

55. −79.211 56. −313.12

57. 242.64 58. 6,572.2

59. 538,670 60. 232,160

61. 5,096 62. 60,890

63. 37,968 64. 43,552

65. 6,130.3 66. 83,837

67. 74,896 68. 3,072.8

Section 5.4

1. .75 2. .64

3. 9.1 4. 5.4

5. 4.5 6. 1.8

7. .44 8. .28

9. .53 10. .66

11. 1.5 12. 4.4

13. .68 14. .24

15. 4.5 16. 7.3

17. .74 18. .47

19. .77 20. .56

21. 8.9 22. 6.7

Math 40


7 2015 Worrel

23. 2.7 24. 8.5

25. 5.8 26. 9.7

27. 9.2 28. 1.6

29. .93 30. .47

31. .98 32. .59

33. 2.4 34. 7.5

35. 6.8 36. 3.6

37. .73 38. .65

39. .38 40. .57

41. 6.9 42. 5.9

43. .54 44. .66

45. .48 46. .41

47. .36 48. .87

49. 3.3 50. 6.5

51. 7.6 52. 7.2

53. 2.4 54. 2.7

55. .19 56. .91

57. .14 58. .93

59. .57 60. .52

61. 8.4 62. 9.1

63. 2.2 64. 9.2

65.5.2435 66. 8.4939

67. .56394 68. .88415

69. 1.1681 70. .57801

Math 40


8 2015 Worrel

71. 69.455 72. 5.7868

73. .34116 74. .004663

75. .11302 76. .52077

77. .6 78. .5

79. .9 80. .2

81. .07 82. .07

83. .05 84. .04

85. .10 86. .07

87. .2 88. .6

Section 5.5

1. 3.6875 2. 3.8

3. 8.75 4. 5.25

5. .0625 6. 2.8

7. .75 8. 1.75

9. 1.5 10. .9375

11. .68 12. .5

13. 1.125 14. 2.5

15. .325 16. 1.5625

17. 2.5 18. .5

19. .375 20. 1.44

21. 1.42 22. 1.48

23. 30.3 24. 8.1

25. .736 26. .91

Math 40


9 2015 Worrel

27. 5.06 28. 2.5

29. .50 30. .53

31. 4.06 32. 2.05

33. 1.48 34. .924

35. .38 36. .257

37. .86 38. 1.805

39. 25.3 40. .73

41. .13 42. 2.96

43. .712 44. .207

45. 5.65 46. 1.23

47. 6.71 48. 1.55

49. 7.71 50. 4.45

51. 6.45 52. 7.8

53. 26

15 54.

107

150

55. 124

75 56.

35

24

57. 7

30 58.

17

30

59. 19

15 60.

22

15

61. 77

24 62.

133

60

63. 383

9.57540

or 64. 401

10.02540

or

Math 40


10 2015 Worrel

65. 1

.52

or 66. 237

4.7450

or

67. 35

24 68.

17

30

Section 5.6

1. 1.75x 2. .5x

3. 1.3x 4. .25x

5. 13x 6. 451.6x

7. 339.2x 8. 804x

9. 8x 10. 34x

11. 1.08x 12. .2x

13. 11.25x 14. 2.5x

15. 3.4x 16. 1.72x

17. 5x 18. 3x

19. 2.17x 20. 16.98x

21. 16.8x 22. 2.9x

23. 13x 24. 1.6x

25. 20.14x 26. 7.44x

27. .4x 28. .6x

29. 4x 30. 2x

31. 3.8x 32. 5.6x

33. .82x 34. 3.75x

35. 43.1x 36. 4.1x

37. 13.56x 38. 15.4x

Math 40


11 2015 Worrel

39. 2.5x 40. 19.49x

41. 26.5x 42. 144.9x

43. 45.75x 44. 1.27x

45. 11.54x 46. 18.3x

47. 8.6x 48. 2,205.1x

49. 2.8x 50. 12.58x

51. 3.82x 52. 90.95x

53. 2.59x 54. 3.25x

55. 2.9x 56. 2.4x

57. 3x 58. 3.8x

For problems 59-81make sure to do the five step word problem method like it is shown in the

book. These are just the answers.

59. 32 bird houses 60. 36 curtains

61. 24 staplers 62. 16 CD packs

63. 44 table cloths 64. 46 quilts

65. 19.10 ft 66. 14.01 ft

67. 235 children’s tickets 68. 240 children’s tickets

69. 29 mechanical pencils 70. 24 engineering templates

71. 19.42 ft 72. 27.37 ft

73. 13.3m 74. 26.9 m

75. 288 children’s tickets 76. 168children’s tickets

77. 16.9m 78. 43.9 m

Math 40


12 2015 Worrel

79. 357.7 million 80. 1.35 million

81. 1.9

Section 5.7

1. -16 and 16 2. -19 and 19

3. none 4. none

5. -21 and 21 6. -6 and 6

7. -18 and 18 8. 0

9. -12 and 12 10. -10 and 10

11. none 12. none

13. -11 and 11 14. None

15. -23 and 23 16. -20 and 20

17. no real solution 18. no real solution

19. 24 20. 17

21. no real solution 22. no real solution

23. 5 24. 15

25. 22 26. 6

27. 14 28. 17

29. 21 30. 18

31. 2 32. 10

33. 0.9 34. 2.3

Math 40


13 2015 Worrel

35. 1.9 36. 0.3

37. 15

4 38.

10

9

39. 1.8 40. 2.4

41. 11

7 42.

25

18

43. 23

11 44.

2

11

45. 1.7 46. 2.1

47. 12

5 48.

7

6

49. 16

19 50.

23

4

51. 0.7 52. 2.2

53. 18 54. 170

55. 17 56. 25

57. 21 58. 195

59. 13 60. 25

61. 5 62. 10

63. 150 64. 232

65. 73 66. 24

67. 135 68. 145

69. 2 70. 112

Math 40


14 2015 Worrel

71. ) 7 8

) 7.62

a between and

b 72.

) 5 6

) 5.20

a between and

b

73. ) 8 9

) 8.89

a between and

b 74.

) 3 4

) 3.46

a between and

b

75. ) 6 7

) 6.63

a between and

b 76.

) 9 10

) 9.38

a between and

b

77. ) 21 22

) 21.66

a between and

b 78.

) 8 9

) 8.54

a between and

b

79. ) 24 25

) 24.80

a between and

b 80.

) 12 13

) 12.73

a between and

b

81. ) 21 22

) 21.07

a between and

b 82.

) 14 15

) 14.93

a between and

b

math 40 prealgebra section 5.1-5.7 homework key · 2019-05-30 · math 40 prealgebra section...

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