I’m working on improving my mental math and quantitative skills ahead of case interviews. Are there any good websites or resources that simulate the types of math-heavy, case-style quantitative questions you typically see in interviews?
I’m especially interested in practice that mirrors real case math (e.g., quick percentage changes, growth rates/CAGR, break-even, unit economics, margin bridges, market sizing calculations, and “back-of-the-envelope” estimation), ideally with timed drills and answer explanations.
