FRAME
NO. 53
ANSWER: .00424
Solution:
Changing from 10-6 to 10-3 means the
4.24 X 10-6 = .00424 X 10-3
exponent changes by 3 in a POSITIVE
direction; so the decimal point in 4.24
ANSWER: 6,280,000
moves 3 places to the LEFT. Changing
from 104 to 10-2 means the exponent
Solution:
changes by 6 in a NEGATIVE direction;
6.28 X 104 - 6,280,000 X 10-2
so the decimal point in 6.28 moves 6
places to the RIGHT.
FRAME
NO. 54
Powers of 10 simplify problem solving. For example:
9X 107
Division: 66.000 = 6.6 X 104 = 6.6 X 104 X 10-3 = 2.2 X 101 or 22
3,000
3 X 103
3
Extracting square root:
4,000,000
=
4 X 106
=
2 X 106+2 = 2 X 103
Squaring a
number:
(20,000)2 = (2 X 104)2 = 4 X 104x2 = 4 X 108
Study the examples above for a moment.
No response required
1-23
IT 0332
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