Writing And Evaluating Scientific Notation Worksheet Page 10
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1523
16. a.
8.867257127 x 10
b.
886,725,712,700,000,000,000,000
-14
17. a.
3.86845039 x 10
b.
0.0000000000000386845039
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18. a.
2.4 x 10
11
b.
2.28484 x 10
20
c.
3.908770065 x 10
-12
d.
6.25 x 10
19. 0.00082
20. 0.000039, 0.01032, 50, 21800
21. 0.00000001, 0.0000000000000000000000017
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22. 4673,0218, 4.6730218 x 10
4
23. 2 x 10
mi/h
5
24. 2.4 x 10
mi
4
25. a.
2.4 x 10
h
8
b.
4.8 x 10
mi
c.
1,000 days
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26. 2.5 x 10
mi
17
27. 6.25 x 10
mi
28. Answers will vary.
29. 14.45 cents
If ten 100 watt bulbs use 1 kilowatt, then one 100 watt bulb would use .1 kilowatts of
electricity. Because a 75 watt bulb is .75 of a 100 watt bulb, a 75 watt bulb would
use .75 x .1 kilowatts = .075 kilowatts of electricity.
A 40 watt bulb is .4 of a 100 watt bulb so it would use .4 x .1= .04 kilowatts of
electricity.
.1 kilowatts + .075 kilowatts + .04 kilowatts = .215 kilowatts per hour
.215 kilowatts per hour x 8 hours =1.72 kilowatts
1.72. kilowatts x 8.4 cents =14.448
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