Easy exponentiation method Is there a simple way of solving, say, $x^{3/2}$?
For example, one way of solving $16^{3/2}$ is to calculate the square root of $16^3$, but I was wondering if there is a simpler mental trick for doing this that generalizes to all possible exponentiation.

If you could see that $16=4^2$ then you could do this
$$\left(4^2\right)^{3/2}=4^3$$
If you can see such a number that would be the fastest method, another method would be the one rae306 mentioned.
