SOLUTIONS MANUAL
C TRIMBLE & ASSOCIATES
PREALGEBRA
NINTH EDITION
Elayn Martin-Gay
Contents
Chapter 1 1
Chapter 2 42
Chapter 3 71
Chapter 4
... [Show More] 101
Chapter 5 164
Chapter 6 209
Chapter 7 246
Chapter 8 284
Chapter 9 330
Chapter 10 370
Appendices 389
Practice Final Exam 392
Copyright © 2025 Pearson Education, Inc. 1
Chapter 1
Section 1.2 Practice Exercises
1. The place value of the 8 in 38,760,005 is
millions.
2. The place value of the 8 in 67,890 is hundreds.
3. The place value of the 8 in 481,922 is tenthousands.
4. 54 is written as fifty-four.
5. 678 is written as six hundred seventy-eight.
6. 93,205 is written as ninety-three thousand, two
hundred five.
7. 679,430,105 is written as six hundred seventynine
million, four hundred thirty thousand, one
hundred five.
8. Thirty-seven in standard form is 37.
9. Two hundred twelve in standard form is 212.
10. Eight thousand, two hundred seventy-four in
standard form is 8,274 or 8274.
11. Five million, fifty-seven thousand, twenty-six in
standard form is 5,057,026.
12. 4,026,301
= 4,000,000 + 20,000 + 6000 + 300 + 1
13. a. Find Australia in the “Country” column.
Read from left to right until the “bronze”
column is reached. Australia won
22 bronze medals.
b. Find the countries for which the entry in the
“Total” column is greater than 60. The
United States, China, ROC, and Great
Britain won more than 60 medals.
Vocabulary, Readiness & Video Check 1.2
1. The numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
... are called whole numbers.
2. The number 1286 is written in standard form.
3. The number “twenty-one” is written in words.
4. The number 900 + 60 + 5 is written in expanded
form.
5. In a whole number, each group of 3 digits is
called a period.
6. The place value of the digit 4 in the whole
number 264 is ones.
7. hundreds
8. To read (or write) a number, read from left to
right.
9. 80,000
10. Dachsund
Exercise Set 1.2
2. The place value of the 5 in 905 is ones.
4. The place value of the 5 in 6527 is hundreds.
6. The place value of the 5 in 79,050,000 is tenthousands.
8. The place value of the 5 in 51,682,700 is tenmillions.
10. 316 is written as three hundred sixteen.
12. 5445 is written as five thousand, four hundred
forty-five.
14. 42,009 is written as forty-two thousand, nine.
16. 3,204,000 is written as three million, two
hundred four thousand.
18. 47,033,107 is written as forty-seven million,
thirty-three thousand, one hundred seven.
20. 254 is written as two hundred fifty-four.
22. 105,447 is written as one hundred five thousand,
four hundred forty-seven.
24. 1,110,000,000 is written as one billion, one
hundred ten million.
26. 11,239 is written as eleven thousand, two
hundred thirty-nine.
28. 202,700 is written as two hundred two thousand,
seven hundred.
30. Four thousand, four hundred sixty-eight in
standard form is 4468.
Chapter 1: The Whole Numbers ISM: Prealgebra
2 Copyright © 2025 Pearson Education, Inc.
32. Seventy-three thousand, two in standard form is
73,002.
34. Sixteen million, four hundred five thousand,
sixteen in standard form is 16,405,016.
36. Two million, twelve in standard form is
2,000,012.
38. Six hundred forty thousand, eight hundred
eighty-one in standard form is 640,881.
40. Two hundred thirty-four thousand in standard
form is 234,000.
42. One thousand, eight hundred fifteen in standard
form is 1815.
44. Two hundred sixty million, one hundred thirtyeight
thousand, five hundred sixty-nine dollars in
standard form is $260,138,569.
46. Seven hundred fifteen in standard form is 715.
48. 789 = 700 + 80 + 9
50. 6040 = 6000 + 40
52. 20,215 = 20,000 + 200 + 10 + 5
54. 99,032 = 90,000 + 9000 + 30 + 2
56. 47,703,029 = 40,000,000 + 7,000,000 + 700,000
+ 3000 + 20 + 9
58. Mount Baker erupted in 1792, which is in
standard form.
60. Mount Shasta and Mount St. Helens have each
had two eruptions listed.
62. Mount St. Helens has an eruption listed in 1980.
All other eruptions listed in the table occurred
before this one.
64. More Golden retrievers are registered than
German shepherds.
66. French bulldogs are second in popularity. 24 is
written as twenty-four.
68. The maximum height of an average-size standard
dachsund is 9 inches.
70. The largest number is 77,753.
72. Yes
74. answers may vary
76. A quadrillion in standard form is
1,000,000,000,000,000.
Section 1.3 Practice Exercises
1. 4135
252
4387
+
2.
1 1 11
47,364
135,898
183, 262
+
3. Notice 12 + 8 = 20 and 4 + 6 = 10.
12 + 4 + 8 + 6 + 5 = 20 + 10 + 5 = 35
4.
1 2 2
6432
789
54
28
7303
+
5. a. 14 − 6 = 8 because 8 + 6 = 14.
b. 20 − 8 = 12 because 12 + 8 = 20
c. 93 − 93 = 0 because 0 + 93 = 93.
d. 42 − 0 = 42 because 42 + 0 = 42.
6. a. 9143
122
9021
−
Check: 9021
122
9143
+
b. 978
851
127
−
Check: 127
851
978
+
7. a.
8 17
69 7
4 9
64 8
−
Check: 648
49
697
+
b.
2 12
326
245
81
−
Check: 81
245
326 [Show Less]