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NO. 68

Solution:

1,200 X 200 X .0003 = (1.2 X 103) X (2 X 102) X (3 X 104)

= (1.2 X 2 X 3) X 103+2+(-4)

= 7.2 X 101

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NO. 69

(104)2 =

Solution:

To raise a power of 10 to the second power, MULTIPLY the power of 10 by 2.

Thus:

(104)2 = 104X2 = 108

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NO. 70

Solve using powers of 10.

(106)2 =

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