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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 1, Playoff Match #9 Calculation League Season 3, Playoff Week 5 Match How to Do Rapid Additions (with Sam Engel) Calculation League Season 3, Finals Match #1 Mental Calculation League, Season 2, Second Period Match
