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I need to improve the quant part of my case cracking. Suggestions on the casebooks I could use or other tips? Thanks! :)

Someone asked on Feb 28, 2019 - 3 answers
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Vlad replied on Feb 28, 2019
McKinsey / Accenture / Got all BIG3 offers / More than 300 real MBB cases / Harvard Business School

Hi,

Here is how you can improve your math skills:

1) Fast math - train, train, and train again

  • Learn how to multiply double digit numbers (https://www.youtube.com/watch?v=6ndkkPZYJHo)
  • Learn the division table up to 1/11 (i.e. 5/6 = 83.3)
  • Learn how to work with zeros (Hint: 4000000 = 4*10ˆ6)
  • Use math tools (Mimir math for iOS), Math tool on Preplounge website to practice

2) Quant part of the case

  • Simply download all casebooks available online and go through all cases. Pls disregard the structuring part and just practice the quant part. The number of distinct math tasks types is not infinite and you can train all of them

3) Critical Reasoning (for PST)

  • GMAT test CR and IR parts (Official guide and Manhattan prep)
  • Mckinsey practice tests
  • PST like tests from the web

4) Working with tables and graphs and deriving conclusions

  • Study "Say it with Charts" book
  • Check all available MBB presentations and publications. Practice to derive conclusions and check yourself with the actual ones from the article/presentation
  • GMAT IR part (Official guide and Manhattan prep)
  • Learn basic statistics (Any GMAT or MBA prep guides)

5) Case math

Practice common market sizing topics (Airport passenger flow, real estate volumes, subway passenger flows, car usage, etc.). You should become comfortable with making assumptions

Learn key financial topics (P&L and balance sheet and how to analyze them, Basic Valuation principles via NPV and comps) and case math:

  • Interest rates calculations
  • Compound margin
  • NPV using the Rule of 72, Perpetuity
  • CAGR using the Rule of 72
  • Currencies exchange calculations
  • Speed, time, distance calculations
  • Equations, systems of equations
  • Ratio & Proportions
  • Solving the problems by calculating the area of the triangle
  • Profit / breakeven formula
  • Correlations, outliers (being able to spot on the graphs, tables)

Good luck with your interviews!

Alessandro
Expert
replied on Mar 02, 2019
Bain & Company | University of Cambridge | CV/Resume writing | 770 GMAT

Hey there,

Besides math tricks and tips that were already shared by Vlad, I can also suggest the Kellogg 2011 case book has some highly quantitative cases which would be great practice for you (probably more quantitative than cases you will get in real MBB interviews, but great for practice!)

You should be able to find it online quite easily by Googling it. In case you have issues, just send me a message and I'll be able to share.

Good luck!

B replied on Mar 25, 2019

solve a lot of GMAT quant problems, learn tricks on how to round numbers up when dividing or multiplying, learn how to break down numbers into pieces, and solve mental math with friends. solve the mckinsey practice tests, and math on preplounge. do a lot of cases on break-even analysis.

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