Case Math and Market Sizing
FreeMediumHacking the Case Interview
Played through YouTube’s official embed player. Prefer the full site? Watch Case Interview Math: Instantly Reduce Your Errors by 80% on YouTube · Hacking the Case Interview
The shortcuts that keep case math clean without a calculator: friendly numbers, doubling and halving, and cancelling zeros before you divide. Pair the techniques here with timed drills until they are reflexes.
Watching is the first half. The second half is doing it yourself while the patterns are still in your head.
Member comments open here with the Community launch. Until then, take your questions about this video to the Interviewer on the home page, or bring them to your next practice session.
Free
EasyCase Math and Market Sizing
Hacking the Case Interview · on YouTube
The shortest honest route into market sizing: the structure, the assumptions, and the difference between TAM, SAM, and SOM. Seven minutes that make every longer sizing video easier to follow.
Free
MediumCase Math and Market Sizing
Management Consulted · on YouTube
A step-by-step sizing walkthrough in the McKinsey manner, from the first clarifying question to the sanity check at the end. Note how every assumption is said out loud before it is used.
Free
MediumCase Math and Market Sizing
Management Consulted · on YouTube
A Bain-style sizing framework built live, with the interviewer assessing the framework itself at the end. Useful for seeing how much of the grade sits in the structure rather than the arithmetic.
Free
EasyCase Math and Market Sizing
MissAngieLu · on YouTube
A four-step method for sizing anything, demonstrated on the croissants sold in Paris with an issue tree and openly stated assumptions. A good second angle if the formula-first approach has not clicked yet.
Free
EasyCase Math and Market Sizing
rocketblocks · on YouTube
RocketBlocks on the factoring techniques that turn ugly divisions into two easy ones, applied to the numerator, the denominator, or both. Short and mechanical, which is exactly what mental math practice should be.
Free
EasyCase Math and Market Sizing
Management Consulted · on YouTube
An ex-Bain consultant explains how to prepare for case math with drills, and why the business insight at the end of a calculation matters more than the calculation itself. Watch it once, then go and drill.
I am your interviewer here. I run cases with you, drill your math, and tell you plainly which part of your game needs work. Ask me something, or press Hear it and I will introduce myself out loud in your device voice. The studio voice connects at launch.
He answers from the guide's own content and names the level it lives in. He does not invent firm facts. On member accounts he remembers your year, school, progress, and scores, and you can see and clear what he remembers.
Loading his voices.
