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.
Hello, As long as no new version is available, you can use the tool from <http://www.atnsoft.com/keyremapper/description.php> for changing the keys on your
Dear fellow calculators, on my website willemboumanrekenen.nl you can find 4 new articles - in (my) English, all concerning squares: a.. squares 1 b.. square
Hello Mr Melik Duyar, Any update on this? I really want to have the software with a new version that allow 0 and 7 represent the same answer for *MENTAL