Collocations for calculation - noun

accurate, correct, exact, precise
an exact calculation of the amount spent so far
Your calculations are correct.

incorrect, wrong
It turned out that our calculations were incorrect.

approximate, rough
Even a rough calculation shows that you have spent too much.

complex, complicated, detailed
simple
quick
mental
arithmetical (esp. BrE), mathematical, numerical, statistical
economic, financial

do, make, perform
She did a rapid calculation in her head.
We cannot make a precise calculation of the price until we have all the costs.

base on sth
The calculations are based on average annual data.

a method of calculation

cold, cool, rational

act
an act of cold calculation