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@AcornCoyote192 hours agoUnited States
Should I use a calculator if the interviewer says it's allowed?
- Case Math
In one practice interview I was told a calculator would be available. If the real interviewer says I can use one, should I use it freely or still try to do most calculations by hand?
Similar Questions
Should I calculate CAGR in a case interview if the trend is obvious?
- Case Math
If an exhibit shows revenue going from 100 to 150 over several years, is it worth calculating CAGR, or should I just describe the growth unless the interviewer asks?
23 hours agoGermany
Top answer
Mayank G.Coach
Mayank G.CoachOnly calculate CAGR when the annualized growth rate matters to the decision.
How do I know when an interviewer wants a precise number versus a rough estimate?
- Case Math
Sometimes I calculate exactly and waste time, and other times I round aggressively and worry I'm being too loose. How do I tell when the interviewer expects precision versus an estimate?
Oct 12, 2026United States
Top answerMayank G.Coach
Mayank G.CoachUse the decision being made to judge the level of precision required.
I got the right case-math setup but used the wrong sign. How bad is that?
- Case Math
My formula was right, but I treated a cost reduction as negative and ended up with the opposite direction in the final number. I caught it when the interviewer questioned the result. How serious is that kind of error?
Oct 9, 2026United States
Top answerMayank G.Coach
Mayank G.CoachA sign error is still a calculation mistake, but catching and correcting it quickly is much better than carrying it through the case.