TL;DR
Two-Digit Multiplication by Chunking: A canonical quantitative trading interview question at foundation difficulty. Commonly asked at SIG, Optiver, Akuna, Flow Traders.
By Valenke Exam Prep Team·Last updated 2026-06-01
foundationRapid Arithmetic
Two-Digit Multiplication by Chunking
Asked at: SIG, Optiver, Akuna, Flow Traders
Problem
Compute mentally within 5 seconds. Then compute . Describe the general chunking strategy for mental multiplication of two-digit numbers.
Related concepts
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