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 #8 Calculation League Season 3, Playoff Set of the Stage: Kaloyan Mental Calculation League, Season 2, Playoff Second Period Match Calculation League Season 2 Finals --- Jure vs. Swanand (narrated by Sam Engel) Mental Calculation League Season 1, Playoff Match #15: The Showdown (with Alex Mullen)
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 #8 Calculation League Season 3, Playoff Set of the Stage: Kaloyan Mental Calculation League, Season 2, Playoff Second Period Match Calculation League Season 2 Finals --- Jure vs. Swanand (narrated by Sam Engel) Mental Calculation League Season 1, Playoff Match #15: The Showdown (with Alex Mullen)
