125 can be written as 1.25 × 102
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125 can be written as 1.25 × 102
125. 5*5=25 25*5=125
125 = 5 x 5 x 5 = 5^(3)
125 written as a power number is 103 where 10 is the base and 3 is the exponent. The power number expresses that 10 is multiplied by itself 3 times or 10 x 10 x 10 = 125.
A negative exponent is simply the reciprocal of the positive exponent. So simply remove the negative sign and find the reciprocal. Thus, for example, 5-3 = 1/53 = 1/125