1. Scientific Notation pages 402–404 Exercises 11. 3.25  10–3 22. 0.0048
ALGEBRA 1 LESSON 8-2
pages 402–404  Exercises
1. No; 55 > 10.
2. yes
3. No; 0.9 < 1.
4. yes
5. yes
6. No; 46 > 10.
 109
 10–2
 106
 104
 10–3
 106
 10–4
 10–2
,000
23. 10–3, 10–1, 100, 101, 105
24. 6  10–10, 8  10–8, 9  10–7,
7  10–6
 10–3, 50.1  10–3,
4.8  10–1, 56  10–2
 10–1, 5.3  105,
0.53  107, 530  108
27. C, A, B
 10–2
 1015
8-2

2. national debt is expressed in dollars, use standard
Scientific Notation
ALGEBRA 1 LESSON 8-2
 101
 10–3
 10–3
 105
35. 7  101
36. 1  101
 10–2
39. 3  10–26
 1010 instructions;
 1012 instructions
44. Answers may vary.
Sample: Since the
national debt is expressed
in dollars, use standard
notation, which most
people will understand,
rather than scientific
notation, which is used
mainly in science.
45. a. 5  1014
b. about 1.6  108 years
40. Answers may vary.
Sample: Yes, if you
regard the 1 in
1  105 as “understood”
as happens when 1 is
the coefficient of a term
like x, then 105 is in
scientific notation.
million = 48  106.
Write 48 in scientific notation;
then add the powers of
10: 4.8  101  106 = 4.8  107.
48 millionths = 48  10–6.
So 4.8  101  10–6 = 4.8  10–5.
42. about $1.65  1012
8-2

3. [1] minor computational error
Scientific Notation
ALGEBRA 1 LESSON 8-2
46. about 2.61  109 people
47. a  1010 km3
b  1012 km3
c  1014 km3
53. 4
54. 3
55.
56.
57.
58.
59.
60. 2 3 64 49
 10–3
49. D
50. G
51. C
52. [2] (8  10–4)(1000) =
 1000 = 0.8;
the diameter is 0.8 mm
[1] minor computational error 1 9
8-2