Case Interview Math: An 8-Step Method, Formulas & Shortcuts (2026)
By Florian Smeritschnig, former McKinsey Senior Consultant · Updated June 2026 Case interview math is fifth-to-seventh-grade arithmetic plus about 15 business formulas, done out loud, under time pressure, with no calculator. The hard part is not the math; it is performing it while you also structure the problem, narrate your logic, and stay composed. What…
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