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Instructional Videos, • 4/22/25 How to Do Rapid Mental Multiplications using Cross-Multiplication (with Mental Calculator Sam Engel) Previous Alternative Strategies for Rapid Mental Multiplications (with Mental Calculator Sam Engel) Next How to Do Rapid Mental Multiplications the Traditional Way (with Mental Calculator Sam Engel) You Might Also Like Mental Calculation League Season 1, Playoff Match #10 Mental Calculation League Season 1, Playoff Match #2 Mental Calculation League Season 1, Playoff Match #18 (with Arthur Benjamin) Calculation League Season 2 Finals --- Kaloyan vs. Swanand Japanese Soroban Test (Multiplication Only--Sanz)
