Mental Calculation, Mathematics, and Puzzles
Do you want to learn soroban and flash anzan? Click here for classes online with record holder in memoriad: Jeonghe Lee!
Any good learning materials on the abacus method?
Flash Anzan - How Much Time Does It Take To Master
Fast division by 23
Study Finds Chess Significantly Improves Creative and Critical Thinking Skills
Dividing by full reptend primes
Calculating odds in poker?
Soroban - can I use my left hand?
More division tricks. Numbers ending in 1 or 2
does the abacus have a real advantage ?
Mental Calculation - Division - Resources?
Very quick division trick for numbers ending in 9 or 8
Flash anzan and techniques
Help choosing a system for mental math
Creative ways of multiplying differently
Best association system for numbers 0 - 999?
Memorizing squares up to 999?
Organizing and implementing mental calculation mnmonics
Duplex method for square roots
Duplex method for squaring numbers very quickly
Best books on Math prodigies and Speed Math
Paper on calendar calculations – determine the year’s share for the day-of-week
Chinese short division
Division with 2 digits simultaneously!
Three digit division
Soroban and flash anzan
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