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Instructional Videos, • 4/23/25 Alternative Strategies for Rapid Mental Multiplications (with Mental Calculator Sam Engel) Previous Traditional vs. Cross Multiplication (with Mental Calculator Sam Engel) Next How to Do Rapid Mental Multiplications using Cross-Multiplication (with Mental Calculator Sam Engel) You Might Also Like Mental Calculation League, Season 2, Playoff Second Period Match How to Do Rapid Additions (with Sam Engel) Mental Calculation League Season 1, Playoff Match #14 Calculation League Season 2 Finals --- Kaloyan vs. Jure Mental Calculation League, Season 2, Playoff First Period Match
