I have another concern.
If a hypothetical question requires this kind of equation X=(34.54*45.4) + (45.34*54.334) + 30002, should u round after you multiply the contents of the brackets, or can you assume that they are separate calculations and round only at the end?
This is because the result would be different.
Situation 1 (round after multiplying the contents of the brackets)
X=1570 + 2464 + 30002
Situation 2 (rounding everything only at the end, imagine the brackets are separate calculations)
X=1568.116 + 2463.5 + 30002
=34034 (rounding only at the last step)