0
Skip to Content
GMCA
GMCA
About GMCA
About the League
Schedule
Standings
Statistics
Register for the Next Season
League Manual
GMCA Simulators
Overview
Multiplication & Division
Estimation, Multioperation & Fractions
Roots/Exponents
Special Tasks
MCWC Tasks
League App with FAQs
Videos
Aaryan Shukla
Jeonghee Lee
Kaloyan Geshev
Rahul Robin
Samuel Engel
Abhilakshya & Trendz Abacus
Arthur Benjamin
Marc Jornet Sanz
Mishti Shah
Panelists
Japanese Soroban
Soroban Rating Simulator
Calculation Organizations and Events
Calculation Guides and Tutorials
Academic Literature
Performances and Media
Simulators
English
Join
GMCA
GMCA
About GMCA
About the League
Schedule
Standings
Statistics
Register for the Next Season
League Manual
GMCA Simulators
Overview
Multiplication & Division
Estimation, Multioperation & Fractions
Roots/Exponents
Special Tasks
MCWC Tasks
League App with FAQs
Videos
Aaryan Shukla
Jeonghee Lee
Kaloyan Geshev
Rahul Robin
Samuel Engel
Abhilakshya & Trendz Abacus
Arthur Benjamin
Marc Jornet Sanz
Mishti Shah
Panelists
Japanese Soroban
Soroban Rating Simulator
Calculation Organizations and Events
Calculation Guides and Tutorials
Academic Literature
Performances and Media
Simulators
English
Join
About GMCA
Folder: Mental Calculation League
Back
About the League
Schedule
Standings
Statistics
Register for the Next Season
League Manual
GMCA Simulators
Folder: GMCA Guides
Back
Overview
Multiplication & Division
Estimation, Multioperation & Fractions
Roots/Exponents
Special Tasks
MCWC Tasks
League App with FAQs
Videos
Folder: Board Members
Back
Aaryan Shukla
Jeonghee Lee
Kaloyan Geshev
Rahul Robin
Samuel Engel
Folder: Advisory Panel
Back
Abhilakshya & Trendz Abacus
Arthur Benjamin
Marc Jornet Sanz
Mishti Shah
Panelists
Folder: Japanese Soroban
Back
Japanese Soroban
Soroban Rating Simulator
Folder: Other Resources
Back
Calculation Organizations and Events
Calculation Guides and Tutorials
Academic Literature
Performances and Media
Simulators
English
Back
Join
  • 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

Related Embedded Video Item Thumbnail Calculation League Season 3, Finals Match #8
Related Embedded Video Item Thumbnail Mental Calculation League Season 1, Playoff Match #11
Related Embedded Video Item Thumbnail Mental Calculation League Season 1, Playoff Match #5 (Regulation)
Related Embedded Video Item Thumbnail Mental Calculation League Season 1, Playoff Match #14 (Overtime Match)
Related Embedded Video Item Thumbnail Calculation League Season 3, Playoff Week 1 Match

GMCA

contact@mentalcalculation.org