Case Interview Math Course by StrategyCase.com
Stop Losing Cases to the Math
Case Interview Math Mastery is a self-paced course that teaches you to set up any case math problem, calculate fast and accurately, and explain what the number means for the client: 29 video lessons and 2,000+ practice problems, plus 100 business challenges and 24 full cases, all with worked solutions.
I built it on what I learned during 5 years at McKinsey and in 2,200+ mock interviews and coaching sessions since 2020.
From verified buyers
What Buyers Report From Their Interviews
Same problems in the interview
“I could use the approach described in all my interviews and 7 out of 9 case math problems I had to solve in my interviews where similar or almost the same than what I worked through in the practice books here.”
Offers
“I worked through all of them and aced all math questions in my interviews + received an offer with 2 out of 3 of my target firms.”
Harder than the real thing
“The level of difficulty in the full case math exercises is, in my opinion, even a little higher than that of the real MBB math I experienced. I could thus cope with the tasks more quickly in the interviews.”
The problem with case math
Three Ways Case Math Costs You the Case
Case math is rarely hard math. It goes wrong in three predictable places, and each one has its own fix in the course.
You don’t know where to start. The prompt is vague, the data is spread across the case, and you set up the wrong calculation.
The 7-step approach to case math, the segmentation of typical problems, and the formulas that keep coming back
You’re too slow under pressure. The method is right, but the arithmetic eats the clock and your confidence.
Fast-math lessons for every operation, percentages, ratios, large numbers, and estimation, then 2,000+ drills
You get the number but lose the case. A mistake slips through, or you can’t say what the result means for the client.
Common-sense checks, top-down communication, and interpreting results to drive the next step
“Often they caught me completely off guard and then I lost my rhythm for the rest of the case. After going through the whole course and many practice questions it is still annoying but at least I have a clear plan now that I can fall back on plus my calculation speed has significantly improved.”
What’s inside
What’s Inside the Course
29 video lessons (4+ hours) and 40+ hours of practice with worked solutions, from simple arithmetic to full cases.
Setting the stage
- The Role of Math in Case Interviews
- Skills and Scoring
- A Winning Case Math Mindset
Approach and communication
- The 7-Step Approach to Case Math
- Bulletproof Top-Down Communication
Typical problems, formulas, and common sense
- Segmentation of Typical Case Math Problems
- Important Formulas and Key Concepts
- The Significance of Common Sense
- Six guided practice lessons with live worked examples
Calculation speed and accuracy
- Introduction to Fast Math
- Addition and Subtraction
- Multiplication and Division
- Averages
- Fractions, Ratios, Percentages, and Rates
- Probabilities
- Large Numbers and Units
- Quick Estimation
Results, market sizing, and practice
- Interpreting Results and Driving Next Steps
- Market Sizing, Basic and Advanced
- Common Mistakes and Pitfalls
- Preparation Strategies and Practice Tips
Practice: 2,000+ math problems across difficulty levels, 100 business challenges, 29 chart-based questions, and 24 full cases, each with a worked solution. Watch before you buy: A Heartfelt Welcome and Introduction to the Case Math Mastery Course are free.
One payment. Instant access. No upsell inside.
Honest fit check
Is This Course Right for You?
Built for
- Candidates who freeze, slow down, or make slips on case math
- Candidates from non-quant backgrounds, or whose school math is years behind them
- Anyone who has plenty of case framework practice but few good math problems to work on
- Applicants to McKinsey, BCG, Bain, Tier-2 firms, the Big 4, and boutiques
Not the right fit if
- You also need structuring and chart interpretation. The Case Interview Academy includes this course plus both.
- Your next step is a timed numerical test, such as the BCG cognitive test. The fast-math lessons help, but practice the test format too with BCG cognitive test practice.
- Your next step is McKinsey Solve. That is the Solve Game Simulations.
Reviews
4.9 Out of 5 From 77 Reviews
“Math has always been the area in cases where I struggled the most […] Yes, you need practice and put in the hours but you also need the right tips and shortcuts to make it work. That’s what this program delivered and I am happy I took it.”
“I was very slow at arithmetic and by practicing daily since two weeks I am now coping much better with case math tasks.”
“I think the biggest benefit is that it teaches you basics and relevant concepts (ROI, break-even,…) but also not to just blindly memorize an approach but come up with your own for each case, learning how to think.”
“For each practice task there is not only the correct solution, but also a solution path including an explanation.”
“I have a non-quant background and so far I have found an understandable explanation and answer to all questions I had for case math as I have encountered it in some case books I practice with.”
“I bought other consulting math programs and this is by a large margin the most tailored and effective one.”
All Verified Buyer Reviews
Your options
Math Only, or the Full Academy?
Case Interview Math Mastery
- 29 video lessons, 4+ hours
- 2,000+ problems, 100 business challenges, 29 chart questions, 24 full cases
- Worked solutions for every practice task
- 1 year of access, all updates included
Case Interview Academy
For $90 more. Bought separately, the structuring and chart courses cost $98.
- Everything in Math Mastery
- Case Structuring course: 36 lessons, 100 drills
- Exhibit Interpretation course: 17 lessons, 50 exhibit problems
- 1 year of access, all updates included
Both: instant access, full refund within 24 hours of purchase, no questions asked. Questions on the material: info@strategycase.com, replies within 24 to 48 hours.
Who built the course
Dr. Florian Smeritschnig
I spent 5 years at McKinsey, was promoted to Senior Consultant, and evaluated candidates for the firm. Since 2020 I have delivered 2,200+ mock interviews and coaching sessions, and my clients have secured 700+ consulting offers, 340 of them at McKinsey, BCG, and Bain.
This course is the case math method I teach in those sessions, with the practice volume to make it stick.
FAQ
Frequently Asked Questions
What exactly do I get for $89?
29 video lessons (4+ hours) and practice with worked solutions: 2,000+ math problems, 100 business challenges, 29 chart-based questions, and 24 full cases. One year of access, with every update during that year.
Can I watch part of it first?
Yes. The first two lessons are free: A Heartfelt Welcome and Introduction to the Case Math Mastery Course.
I’m not a math person. Will this work for me?
It was built for that. The course starts from the basics and builds up to full cases, and many reviewers describe non-quant backgrounds or school math that was years behind them. What it cannot replace is the practice: the improvement comes from the drills.
How long does it take?
The videos take a few hours. Reviewers typically describe one to three weeks to work through the practice properly, depending on how much time they had.
Should I get Math Mastery or the full Academy?
If math is your only weak spot, take Math Mastery. If you also need structuring or chart interpretation, the Academy includes this course plus both, for $90 more. Already bought Math Mastery? Email info@strategycase.com and we will set up the upgrade.
Does it help with numerical reasoning tests?
Partly. The fast-math, percentage, and estimation lessons are the same skills timed numerical tests reward. The test formats themselves differ, so practice those separately, for example with BCG cognitive test practice.
Which firms does it prepare me for?
Case math works the same way across McKinsey, BCG, Bain, Tier-2 firms, the Big 4, boutiques, and in-house strategy teams, and the course also helps for banking, finance, and product management interviews that include cases.
How long do I have access, and where are my lessons?
One year, with every update. After purchase, go straight to your course.
What if it is not right for me?
Email info@strategycase.com within 24 hours of purchase for a full refund, no questions asked. After that the purchase is final, because the whole course is available the moment you pay.
Make Case Math the Part You’re Sure Of
29 lessons, 2,000+ problems, and a method you can use on any case math question. Get StrategyCase’s Case Interview Math Mastery for $89, with a year of access and an instant start.
Get Math Mastery for $89 →Full refund within 24 hours of purchase, no questions asked.
Free first: the case interview math guide and the case math drill generator.
Great!
Very good drills and a lot of content to go through!
I benefited from taking this maths course and had an excellent experionce with it. I made significant improvements and believe it’s a brilliant choice.
Way too expensive for what is in the pack.
Great for developing your quantitative skills for case interviews. Excellent blend of theory and practice.