Analyst Research

Analyst: Arthur Benjamin

"The mathemagician's guide to lightning calculation. Essential for understanding the mechanics of rapid arithmetic."

Analyst: Ronald W. Doerfler

"Historical techniques for mental computation. Advanced material for engineers and navigators."

Analyst: Bill Handley

"Simplified methods for fast mental calculation. Good coverage of everyday finance applications."

Analyst: Various

"Compilation of techniques from world-class mental calculators."

Analyst: Udemy

"Online course covering shortcuts for percentage calculations and estimation."

Analyst: Wall Street Prep

"Industry standard for structured prep. Covers market sizing and quick estimates heavily."

Analyst: BIWS

"Deep dive financial modeling with emphasis on speed and accuracy."

Analyst: Desmos

"Top-tier graphing and scientific calculator for verification."

Analyst: Wolfram Research

"Computational engine for complex calculations and theory."

Analyst: WSM Editorial

"A practical list of 10 finance-ready mental math tricks, with examples, quick drills, and a workflow for faster interview and meeting arithmetic."

Analyst: WSM Editorial

"A practical trading interview mental math guide with question types, timing benchmarks, prep drills, and common failure modes."

Analyst: WSM Editorial

"A practical Rule of 72 explainer for investors with accuracy ranges, worked examples, and fast ways to use it in finance conversations."

Analyst: WSM Editorial

"A daily five-exercise finance mental math routine to improve interview speed, reduce arithmetic mistakes, and build confidence under pressure."

Analyst: WSM Editorial

"A balanced look at mental math vs calculator use in finance, with practical guidance on when each approach is stronger."

Analyst: WSM Editorial

"Master 50+ mental math strategies used on Wall Street. Covers addition, subtraction, multiplication, division, percentages, rate changes, and Rule of 72 with worked examples."

Analyst: WSM Editorial

"Learn the Trachtenberg speed system rules for multiplication and addition, with worked examples from investment banking, trading interviews, and deal math."