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What is the best way to practice math for McKinsey quant heavy cases? Want to improve on all fronts - speed, accuracy and structuring questions especially when limited info is shared. Any advice would be appreciated! Thanks

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Francesco replied on 07/05/2017
Ex BCG | MBB Specialist | #1 Expert for meetings done (900+) and recommendation rate (100%)

Hi Jyotishman,

as for structuring, the best preparation I found for math-intensive case has been on consulting handbooks of top MBA school. In particular, I would suggest the following:

  1. Download a couple of handbooks for top universities; there are several free available online (INSEAD, LBS, Columbia, etc)
  2. Skim cases trying to identify those with more quant based approach (usually you can identify them visually, as they involve graphs)
  3. Read the questions of the cases; try to answer first with your approach, then read the solution
  4. Write down all the mistakes you do when solving them
  5. Starting at least one week before the interview, review daily all the mistakes redoing the questions you found more challenging

As for math speed and accuracy, you can find several resources online where you can test yourself under pressure. PrepLounge and Victor Cheng websites in particular have an ad-hoc section for that; you can check them at the following links:



Hope this helps,


replied on 07/04/2017
MBA Candidate at INSEAD / Ex McKinsey / Here to guide you from your very first steps

Dear Jyotishman,

a good way is to practice with GMAT math exercises. They might of course be a bit different, but they train you at being quick in problemsolving.


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