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Name
Name
1-5A Lesson Master
Questions on SPUR Objectives
See pages 65–67 for objectives.
1-5B Lesson Master
SKILLS Objective B: Convert powers and word names for
SKILLS Objective B
numbers to decimals.
In 1–4, write as a decimal.
1. 16 thousandths
In 1–8, write as a decimal.
2. twelve ten-thousandths
0.016
1. five tenths
0.0012
3. 2.3 hundredths
4. 6 ten-millionths
A 0.700000000000
B 0.0000000000007
C 0.000000000007
4. 1.5 hundredths
7.1067
D
5. Multiple Choice What is the decimal equivalent of seven hundred-billionths?
0.015
5. 632 thousandths
D 0.00000000007
6. Write the underlined number as a power of ten. Eye technologies
often use laser technology that generates light pulses as short as
one quadrillionth of a second.
0.0041
3. 7 and 1,067 ten-thousandths
0.0000006
0.023
2. 41 ten-thousandths
0.5
6. five thousandths
0.005
0.632
10−15
7. 4 millionths
8. 66 hundred-thousandths
0.00066
0.000004
SKILLS Objective D
C
9. Multiple choice. What is the decimal equivalent of five hundred-thousandths?
7. Write the general rule for multiplying a decimal by 0.00001.
B 0.500
A 500,000
Move the decimal point 5 places to the left.
B 0.17
A 1.710
9. 8664.568 × 100
0.0095420005
D 0.0017
12. The government increased the prime rate one quarter of one percent.
13. 9.0063778 × 0.000000001
13. The sales tax in this city is 8.75%.
0.0000000090063778
0.0000008
A
1
D _____
31,000
10
C 31 ____
1,000
In 12 and 13, write the underlined number as a power of ten.
0.000056
12. 0.0008 × 10−3
3,110
B _____
1000
31
A _____
10,000
1
11. 0.0056 × ___
100
10. 954.20005 × 10−5
D
C 1.007
11. Multiple choice. Which fraction is the equivalent of thirty-one ten-thousandths?
8664.568
0.0003999
D 500.001
10. Multiple choice. What is the decimal equivalent of 1.7 thousandths?
In 8–13, multiply by powers of ten.
1
8. 3.999 × _____
10,000
C 0.00005
25 × 10−4
875 × 10−4
14. Arrange from greatest to least:
1
___
, 100, 0.0001, 10−6, 103
100
1
; 0.0001; 10−6
103; 100; ___
100
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Name
1-5B
page 2
SKILLS
Objective D: Multiply by powers of ten.
1-6A Lesson Master
Questions on SPUR Objectives
See pages 65–67 for objectives.
SKILLS Objective A
14. Write the general rule for multiplying a decimal by 10−4.
powering; 62
1. Which operation should be done first in 25 × 12 ÷ 3 − 1 + 62 ?
Move the decimal point 4 places to the left.
In 2–10, use your calculator to evaluate each expression.
In 15–18, change the power of 10 to a decimal.
−43
1
10
17. 10−1
5. 10,000 - 3 ×
0.1
0.001
0.23416
0.0000175
0.16502
SKILLS
1,650,200
37,960
1
____
0
10,000 ; 10 ; 100; 1,000
20
100
0.000002
2 × 104
14. 13 - 7 × 2 - 1
15. ( 13 - 7 ) × 2 - 1
16. 13 - 7 × 2 -1
17. 13 - 7 × 2 - 1
2 × 104; 2,000; 20; 100; 20 × 10−3; 0.000002
18. r · s - t2 ÷ r
4 · 5 - 62 ÷ 4 =
4 · 5 - 36 ÷ 4 =
20 - 9 = 11
562.004 × 108;
56,200,400,000
0.0451 × 103; 45.1
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28 ÷ 4 = 7
6×2-1=
12 -) 1( =) 11
(
6×1=6
In 18 and 19, evaluate the expression when r = 4, s = 5, and t = 6.
Show your work.
20 × 10−3
In 29 and 30, change to decimals. Then compute.
29. Five hundred sixty-two and four thousandths
times ten to the eighth power.
30. Four hundred fi fty-one ten-thousandths
times ten to the third power.
A4
13. 28 ÷ ( 7 - 3 )
13 - 7 × 1 =
13 - 7 = 6
28. Arrange from greatest to least.
2,000
12. 28 ÷ 7 - 3
13 - 14 - 1 =
−1 - ( 1 =) −2
100
0.0000001;
Objective C
4-3=1
27. Arrange from least to greatest.
1
_____
10,000
33
In 12–17, evaluate the expression. Show your work.
26. 37.96 × 1,000
0.000186854
1,000
19.5
8 · ( 9 + 11.3 ) = 162.4
24. 165.02 × 104
25. 186.854 × 0.000001
0.0000001
10. 3( 2 + 32 )
165,020
23. 165.02 × 10−3
100
97
0.5
9. 2 · 3 ÷ 4 + 2 · 32
11. Write the numerical expression for the product of 8 and the sum of 9
and 11.3. Then evaluate it.
22. 165.02 × 103
165.02
9.4
300
7. ___
× 10 - 3
30
6. 0.5 · 5 - 5 · 0.4
222.4
1
20. 0.00175 × ___
100
21. 165.02 × 100
112
8. ( 144 - 5 ) ÷ 5 · 23
In 19–26, multiply by powers of ten.
4. 8 + 0.07 · 20
10
9,637
18. 10−3
1
19. 234.16 × ____
1,000
3. 17 - ( 3 + 4 )
2. 13 - 7 × 8
16.
101
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19. s + ( t - r )3 · t
5 + ( 6 - 4 )3 · 6 =
5 + ( 2 )3 · 6 =
5+8·6=
5 + 48 = 53
Copyright © Wright Group/McGraw-Hill
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