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, Week 6 --- Wenzel Blitz Mental Calculation League Season 1, Playoff Match #16 Japanese Soroban Test (Engel) Mental Calculation League Season 1, Week 7 --- Highlighted Match Calculation League Season 3, Championship Match #1 (narrated by Jure Colak)
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, Week 6 --- Wenzel Blitz Mental Calculation League Season 1, Playoff Match #16 Japanese Soroban Test (Engel) Mental Calculation League Season 1, Week 7 --- Highlighted Match Calculation League Season 3, Championship Match #1 (narrated by Jure Colak)