SOLUTIONSMANUAL l
CTRIMBLE &ASSOCIATES
L L L
PREALGEBRA
NINTH EDITION
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ElaynMartin-Gay
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, Contents
Chapter 1
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Chapter 2
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Chapter 3
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Chapter 4
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Chapter 5
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Chapter 6
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Chapter 7
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Chapter 8
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Chapter 9
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Chapter 10
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Appendices 389
Practice Final Exam
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, Chapter 1
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Section 1.2 Practice Exercises
l l l 5. In a whole number, each group of 3 digits is
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called a period.
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1. The place value of the 8 in 38,760,005 is
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millions.
l 6. The place value of the digit 4 in the whole
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number 264 is ones.
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2. The place value of the 8 in 67,890 is hundreds.
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7. hundreds
3. The place value of the 8 in 481,922 is ten-
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thousands.
l 8. To read (or write) a number, read from left to
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right.
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4. 54 is written as fifty-four.
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9. 80,000
5. 678 is written as six hundred seventy-eight.
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10. Dachsund
6. 93,205 is written as ninety-three thousand, two l l l l l l
hundred five.
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7. 679,430,105 is written as six hundred seventy- l l l l l l 2. The place value of the 5 in 905 is ones.
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nine million, four hundred thirty thousand, one
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hundred five.
l l 4. The place value of the 5 in 6527 is hundreds.
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8. Thirty-seven in standard form is 37. l l l l l 6. The place value of the 5 in 79,050,000 is ten-
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thousands.
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9. Two hundred twelve in standard form is 212.
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8. The place value of the 5 in 51,682,700 is ten-
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10. Eight thousand, two hundred seventy-four in
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standard form is 8,274 or 8274.
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10. 316 is written as three hundred sixteen.
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11. Five million, fifty-seven thousand, twenty-six in
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standard form is 5,057,026.
l l l l 12. 5445 is written as five thousand, four hundred
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forty-five.
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12. 4,026,301
= 4,000,000 + 20,000 + 6000 + 300 + 1
l l l l l l l l l 14. 42,009 is written as forty-two thousand, nine.
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13. a. l Find Australia in the “Country” column.
l l l l l 16. 3,204,000 is written as three million, two
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Read from left to right until the “bronze”
l l l l l l l l hundred four thousand.
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column is reached. Australia won
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22 bronze medals. l l
18. 47,033,107 is written as forty-seven million,
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thirty-three thousand, one hundred seven.
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b. Find the countries for which the entry in the
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“Total” column is greater than 60. The
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20. 254 is written as two hundred fifty-four.
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United States, China, ROC, and Great
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Britain won more than 60 medals.
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22. 105,447 is written as one hundred five thousand,
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four hundred forty-seven.
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Vocabulary, Readiness & Video Check 1.2 l l l l l
24. 1,110,000,000 is written as one billion, one
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1. The numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
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hundred ten million.
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... are called whole numbers.
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26. 11,239 is written as eleven thousand, two
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2. The number 1286 is written in standard form.
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hundred thirty-nine.
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3. The number “twenty-one” is written in words.
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28. 202,700 is written as two hundred two thousand,
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seven hundred.
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4. The number 900 + 60 + 5 is written in expanded
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form.
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30. Four thousand, four hundred sixty-eight in standard
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form is 4468.
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, Chapter 1: The Whole Numbers
l l l l ISM: Prealgebra l
32. Seventy-three thousand, two in standard form is
l l l l l l l 74. answers may vary
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73,002.
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76. A quadrillion in standard form is 1,000,000,000,000,000.
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34. Sixteen million, four hundred five thousand,
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sixteen in standard form is 16,405,016.
l l l l l l Section 1.3 Practice Exercises
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36. Two million, twelve in standard form is 2,000,012.
l l l l l l l l 1. 4135
+ 252l
38. Six hundred forty thousand, eight hundred
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4387
eighty-one in standard form is 640,881.
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1 1 11
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40. Two hundred thirty-four thousand in standard
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2. 47,364 l
form is 234,000.
+ 135,898
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42. One thousand, eight hundred fifteen in standard
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form is 1815.
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3. Notice 12 + 8 = 20 and 4 + 6 = 10.
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44. Two hundred sixty million, one hundred thirty-
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12 + 4 + 8 + 6 + 5 = 20 + 10 + 5 = 35
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eight thousand, five hundred sixty-nine dollars in
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standard form is $260,138,569.
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4. 6432
46. Seven hundred fifteen in standard form is 715.
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789
48. 789 = 700 + 80 + 9
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54
+ 28
50. 6040 = 6000 + 40
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7303
52. 20,215 = 20,000 + 200 + 10 + 5
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5. a. 14 − 6 = 8 because 8 + 6 = 14.
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54. 99,032 = 90,000 + 9000 + 30 + 2
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b. 20 − 8 = 12 because 12 + 8 = 20
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56. 47,703,029 = 40,000,000 + 7,000,000 + 700,000
93 − 93 = 0 because 0 + 93 = 93.
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+ 3000 + 20 + 9 l l l l l
c. l l l l l l l l l l
58. Mount Baker erupted in 1792, which is in
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d. 42 − 0 = 42 because 42 + 0 = 42.
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standard form. l
6. a. 9143 Check: l 9021
60. Mount Shasta and Mount St. Helens have each
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− 122 l + 122 l
had two eruptions listed.
l l l l 9021 9143
62. Mount St. Helens has an eruption listed in 1980.
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b. 978 Check: 127
All other eruptions listed in the table occurred
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− 851 l + 851 l
before this one.
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127 978
64. More Golden retrievers are registered than
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German shepherds.
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8 17 l
7. a. 69 7 l Check: 648 l l
66. French bulldogs are second in popularity. 24 is
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written as twenty-four.
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64 8 l 697
68. The maximum height of an average-size standard
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2 12 l
dachsund is 9 inches.
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b. 326 Check: 81
70. The largest number is 77,753.
l l l l l − 245 l + 245 l
81 326
72. Yes
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