standard form

Question

(4.98x10^110)x(1.82x10^82)

Answer 1

Multiply the 4.98 and the 1.82 to get A. Add the exponents 110 and 82 to get B.
The answer is A x 10^B

I don't know what you mean by "standard form". A x 10^B is a standerd scientific form.

You should use only three significant figures for A, because that is all that you have been given.