Math & Estimation
Mental math drills, market sizing patterns, and the recovery techniques top candidates use when a number goes sideways.
Case Math Drills: 12 Worked Examples to Build Fluency
Drill articles only work if you actually do them. Twelve case-math problems with worked solutions across the patterns that show up most: percentage shifts, big-number scaling, profitability math, and 90-second market sizing.
Market Sizing: From Top-Down to Bottom-Up in 90 Seconds
Most candidates pick top-down or bottom-up and commit. The strong move is to know when each one is structurally right — and to triangulate when neither is.
Mental Math for Consulting: 12 Shortcuts You Can't Afford to Miss
Most candidates lose math points not because the arithmetic is hard, but because they are doing it the slow way. Twelve shortcuts that compound across an hour of casing.
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