Learn quant skills for Case Interviews from a former McKinsey consultant

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The World’s #1 Selling Online Course for Quantitative Case Interview Preparation

Introduction

Matthew TambiahHello! My name is Matthew Tambiah and I’m the creator of the FastMath Ace the Case Online Course. I’m a former McKinsey consultant and a graduate of both Harvard and MIT, and I created this online course to teach you the quantitative and mental calculation skills you need to succeed in management consulting-style Case Interviews.

In this course you will learn a comprehensive set of calculation methods designed specifically to enable you to perform Case Interview calculations quickly and easily, along with the most efficient solution method to the most important quantitative Case Interview problem types.

Not only do aspiring management consultants need to be prepared for Case Interviews, but so do candidates for many other job functions such as Product Management, Marketing, General Management, Private Equity, and Brand Management, at firms like Google, Facebook, Goldman Sachs, Proctor & Gamble, and many others.

FastMath Ace the Case is unique among quantitative Case Interview preparation resources because it uses on-demand video lessons to teach efficient calculation and problem solving methods — instead of simply providing practice problems and answers. Furthermore, all the calculation methods and examples are based on questions and the specific numbers used in actual Case Interview calculations.

After learning the course material, candidates will dramatically increase their calculation speed and efficiency, and be well prepared for a wide range of quantitative Case Interviews questions.

Thousands of students from leading universities worldwide, like Wharton, Harvard Business School, Stanford, MIT, Kellogg, London Business School, INSEAD, and many more, have used the FastMath Ace the Case methods and techniques to join elite management consulting firms like McKinsey, Bain, BCG, Accenture, Deloitte, and PwC, and other leading firms like Google, Proctor and Gamble, and Wells Fargo.

Discover for yourself why people love FastMath and maximize your own Case Interview performance by registering for the FastMath Ace the Case Online Course!

Email iconQuestions?  Email me at: info@fastmath.net

Mental Calculation Methods

Learn fast and efficient calculation methods for the following types of operations:

  • Multiplication and division
  • Percentage calculations
  • Fractions and decimal calculations
  • Compound growth calculations
  • NPV calculations
  • Inverse Proportion

Quant Problem Types

Learn the most efficient solution method to the most important quantitative Case Interview problem types, including:

  • Market Sizing & Estimation

  • Chart Reading

  • Break-even

  • Profitability

  • Price Optimization & Competitive Pricing

  • Investment Decision

  • Economies of Scale

  • Production Optimization

  • Growth Rate Analysis

  • Response Rate Analysis

  • Net Present Value (NPV)

  • Pipeline Analysis

Course Features

  • 24-month subscription
  • 7+ hours of on-demand video lessons
  • 50+ lessons/modules
  • Hundreds of practice problems and solutions
  • Market sizing data tables
  • McKinsey PST methods and material
  • Downloadable reference files
  • Mobile accessible platform (iPad, iPhone, and Android)
  • 30-day money-back guarantee
  • All calculation methods and examples are based on real Case Interview calculations

Trusted by Students from

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Testimonials

“FastMath is the best quant case preparation resource — hands down! The methods and material helped me ace my interviews and land an offer from BCG!”

BCG consultant and Columbia MBA student

“This course is essential material you must learn before your Case Interviews.”

MIT Master's in Finance student

“Excellent material! This course definitely helped me land a job at McKinsey!”

McKinsey Consultant and Columbia PhD graduate

“Quant used to be one of my weakest areas regarding Case Interviews. After taking your course and practicing the methods, it’s now one of my strongest!”

Wharton MBA student

“A+ This course is an essential tool in your arsenal for acing the consulting interviews!”

MIT Sloan MBA student

“The FastMath methods are easy to learn and effective! This course prepared me for all the quant problems I encountered in my case interviews.”

London Business School MBA student

Sample Lessons

FastMath Ace the Case

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Introduction and Background

FastMath Ace the Case

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Multiplication Methods

FastMath Ace the Case

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Market Sizing Overview

FastMath Ace the Case

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Market Sizing Example

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Break-even Analysis

FastMath Ace the Case

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Compound Growth Calculations

Why Quant Skills Are Important in Case Interviews

Case Interviews require candidates to perform mathematical and quantitative analysis, interpret results, and develop insights and recommendations — all without using a calculator or spreadsheet, which many people find very challenging and/or intimidating. The pressure is further compounded by the fact that,as your quant evaluation is a critical factor in your overall evaluation as a candidate, a high-paying job and your future career are at stake — so performing poorly can sink your
chances of receiving an offer.

Management consulting firms assess the quant skills of candidates because — as clients hire management consultants primarily to provide recommendations based on objective quantitative data and analysis — effective management consultants need strong quantitative skills. A firm’s assessment of your quant skills carries strong weight in its hiring decision — the quant assessment typically contributes 20–25% of the overall candidate evaluation. Many firms do have a minimum bar for quant skills and you are unlikely to receive an offer if your performance is under that bar. One great way to distinguish yourself from other candidates is to demonstrate outstanding quantitative skills.

Read the Articles above for more detail on why firms assess quant skills — as well as the specific quant skills assessed in Case Interviews.

My Background

While many people are nervous about the quant component of Case Interviews, math has always come naturally to me. I always excelled in math — starting in elementary school, and continuing through college at Harvard (where I graduated with Highest Honors in Electrical and Computer Engineering) and graduate school at MIT. In this online course, I will teach you the quantitative and mental calculation methods I personally used to successfully navigate the McKinsey Case Interview process. I have used similar methods throughout my academic career, and they enabled me to earn top scores on standardized tests such as the SAT and the GMAT, and to excel academically at both Harvard and MIT.

Course Overview

In the FastMath Ace the Case Online Course, I use on-demand video instruction to teach calculation and problem-solving methods designed specifically to quickly solve quantitative problems required in Case Interviews at elite management consulting firms like McKinsey, Bain and BCG, and other firms that use Case Interviews. The FastMath Ace the Case Online Course has two primary components.

In the first component, you will learn a set of FastMath calculation methods designed specifically to simplify nearly all calculations required in Case Interviews (Case Calculations). These FastMath calculation methods will enable you to perform Case Calculations faster, more efficiently, and reduce your calculation errors, without using a calculator — as required in Case Interviews. The FastMath calculation methods can be used to efficiently perform calculations done both pure-mentally, and with pen and paper.

In the second component, I’ll show you how to apply the FastMath calculation methods to the most important, and most frequently encountered, types of quantitative problems given in Case Interviews. I provide a detailed explanation of the most efficient solution method(s) for over 15 distinct Case interview quantitative problem types, and demonstrate how to use the FastMath calculation methods to calculate answers quickly and efficiently. I will also highlight how to use the numerical results to develop Case-specific insights and recommendations. I’ll provide you with numerous full Case Interview example quant problems with detailed solution methods, and provide a comprehensive set of practice problems with detailed solution methods that reinforce the course material.

The Consulting Clubs at numerous leading MBA programs recommend FastMath Ace the Case to their members for quantitative Case Interview preparation. Thousands of students from leading universities worldwide, like Wharton, Harvard Business School, Stanford, MIT, Kellogg, London Business School, INSEAD, and many more, have used the FastMath Ace the Case methods and techniques to join elite management consulting firms like McKinsey, Bain, BCG, Accenture, Deloitte, and PwC, and other leading firms like Google, Proctor and Gamble, and Wells Fargo

Mental Calculation Methods

Learn fast and efficient calculation methods for the following types of operations:

Multiplication and division
Percentage calculations
Fractions and decimal calculations
Compound growth calculations
NPV calculations
Inversion proportion

Quant Problem Types

Learn the most efficient solution method to the most important quantitative Case Interview problem types, including:

Market Sizing & Estimation
Chart Reading
Break-even Analysis
Profitability Analysis
Investment Decision Analysis
Price Optimization
Growth Rate Analysis
Economies of Scale
Net Present Value (NPV) Analysis
Production Analysis
Response Rate Analysis
Pipeline Analysis

McKinsey PST Material

This course also includes exclusive content to help candidates prepare for the McKinsey Problem Solving Test (PST), which advanced degree candidates (non-MBA) candidates are often required to take. The McKinsey PST is the most challenging quantitative test I am aware of, and requires more accurate and complex calculations than are required in Case Interviews (e.g. accurately calculating compound growth).

I have hosted in-person McKinsey PST preparation workshops for the graduate student consulting clubs at Harvard, MIT and Columbia. The FastMath calculation methods for Case Interviews are very helpful for the McKinsey PST. This course also includes additional FastMath calculation methods needed for the more complex calculations required on the McKinsey PST, such as methods to accurately calculate compound growth, and solution methods to the quant questions from two official McKinsey PST practice tests.

McKinsey PST Content

  • Advanced FastMath calculation methods needed McKinsey PST problems
  • Solution methods to two McKinsey PST practice tests (quant questions)

Course Differentiators

The FastMath Ace the Case Online Course is different from other quantitative interview-preparation resources because I use on-demand video lessons to teach you how to do Case Calculations faster and more efficiently. Most other quantitative interview-prep resources simply provide practice problems and answers — without teaching methods to efficiently perform the calculations without a calculator.

Furthermore, all the calculation methods in this course are designed specifically for the types of calculations you will actually encounter in a Case Interview, and all the example problems are based on problems given in actual Case Interviews at elite Management Consulting firms. I also cover efficient solution methods to a wide variety of the most common types of quant Case Interview problems. Many other quant interview-prep resources use examples that don’t reflect actual Case Interview problems and don’t cover the full range of calculation types and problem types that I cover in FastMath Ace the Case.

For example, most numbers used in Case Interviews (what I call Case Numbers) are either “round” numbers like 2,000,000 or have specific characteristics you can use to simplify calculations with those numbers — if you know the proper methods! In the FastMath Ace the Case Online Course, I focus on teaching efficient methods for doing the calculations in Case Interviews with actual Case Numbers. See this page to learn more about how this course was Designed for Real Case Calculations.

30-day Money-back Guarantee

If you’re unhappy with this course for any reason, email me and I will provide a refund.

Course Lessons

Introduction: Overview & Background
Introduction & Background
Case Interviews
Context of Quant Problems in Case Interviews

Math Skills Required for Case Interviews

Course Requirements and Math Review (Optional)

McKinsey Full Case: Catalog Retailer

BCG Full Case Example
FastMath Multiplication & Division Methods
FastMath Overview

Multiplication

Division & Factoring 1

Division & Factoring 2

FastMath Practice Problems

Mental Math Regular Exercises
Detail: Multiplication & Division Methods
Multiplying & Dividing by 25

Multiplying & Dividing by 5 & 5

Handling Zeroes I

Handling Zeroes II

Mult. & Div. by 2 Part I

Mult. & Div. by 2 Part II
FastMath: Percentages & Growth / Change
Percentage Calculations

Compound Growth 1

Compound Growth 2

Compound Growth 3

Inverse Proportion

Doubling (& Halving) Time

FastMath Tables
Market Sizing & Estimation Problems
Overview

Example 1: McDonald's US Sales

Example 2: US Auto Sales

Best Practices

Market Sizing Practice Problems

Solutions to Market Sizing Problems
Quant Case Problems
Overview

Break-even Analysis

Profitability Analysis

Response Rate Analysis

Economies of Scale

Growth Rate Analysis

Chart Reading 1

Chart Reading 2 (Recommended)

Price Elasticity

Investment Decision (Full Case)

Hard: Production Shifting (McKinsey)

Competitive Pricing Response

Hard: Pipeline Analysis (McKinsey)

Pipeline Analysis: Algebraic Solution

McK Organ Donation Case
Conclusion
Summary & Conclusion
Advanced Quant Topics
NPV 1: Net Present Value Overview

NPV 2: Perpetuities & Examples

NPV 3: Perpetuities with Growth

NPV 4: Sensitivity Analysis
McKinsey PST Materials
Practice Test A: Kosher Franks

Practice Test B: Freddie's Shrimp

PST Tips and FastMath Methods

Solutions to Practice Test A

Solutions to Practice Test B

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