The topics discussed are for example:
* advanced mental calculation tasks (like extracting roots or multiplying big numbers)
* algorithms
* books about mental calculating
* competitions, achievements and records for mental calculations
* teaching mental calculation at school
* useful computer programs
* using the abacus / soroban
Beginners' questions are welcome, but do not expect to get the solution for your homework here.
Dear calculator friends, What do I see on internet about Mental Calculation and comparable activities? Heaps of longer and shorter videos which have without
Dear Calculationfriends, It is not the first time that I let know not to be amused when I see either videos or read articles in which some prodigees show