Answer
a) $5.5\times10^{4}$
b) $4.8\times10^{2}$
c) $5.0\times10^{-6}$
d) $1.4\times10^{-4}$
Work Step by Step
Move the decimal point either left or right until there is only one non-zero number left before the decimal point.
If the number is less than 0, then the exponent will be negative.
If the number is greater than 0, then the exponent will be positive.