Question

An answer that is approximately exact is an

Answer 1

If you are approximating, then you are estimating... therefore your answer would be an estimate.  I hope this helps.

Answer 2

An answer that is approximately exact is an Estimation

Explanation:

If we find the result of an operation approximately we are estimating.

The estimation can be very useful if we do not need an exact answer but an closely answer.

For example when we round the quantities first, then we perform the operation, that is an estimation. Also when we use significant figures