I'm not sure what you mean and I've never seen the example you used (x.xxe+.008).
I've seen x.xxe8 which is xxx,000,000 written out in full (decimal moves to the right) or x.xxe-8 which is 0.0000000xxx where the decimal moves to the left (should be 7 zeros in there if I can see right on this screen).
Of course, you can have an exponent to a fractional power but you don't just move the decimal place in that case to get to the answer.
For example, 2e0.005 is 1.0035.