Power of Ten
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 "Powers of 10" are the number 10 raised to any power, including negative powers. The metric system is based on powers of 10. Examples: Powers of 10 102 , 103 , 108 , 10-2 , 10-14 Positive powers of ten equal 10 times itself that many times. Examples: Positive Powers of 10 102 = 10 times itself 2 times = 10 x 10 103 = 10 times itself 3 times = 10 x 10 x 10 107 = 10 times itself 7 times = 10 x 10 x 10 x 10 x 10 x 10 x 10
 Negative powers of ten equal 1 divided by ten times itself that many times. (Don't worry about why.) Examples: Negative Powers of 10 10-2 = 1 divided by 10 times itself 2 times = 1/(10 x 10 ) 10-3 = 1 divided by 10 times itself 2 times = 1/(10 x 10 x 10 ) 10-7 = 1 divided by 10 times itself 2 times = 1/(10 x 10 x 10 x 10 10 x 10 x 10 ) Any number to the zero power equals 1. So 100 = 1 Don't worry about why, unless you like worrying. :)
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