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MentalCalculation · Mental Calculation
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Group Information

  • Members: 869
  • Category: Mathematics
  • Founded: Oct 8, 2002
  • Language: English
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Activity within 7 days:

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Description

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.

Most Recent Messages

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cycles and periods
On www.likanas.de > Das Jahr im Kopf you can download a 137-page pdf with the title "Zyklen und Perioden. Grundlagen der Komputistik." The paper follows a
Posted - Sun Dec 13, 2009 4:41 pm
 mnempi
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Re: tip???
Hi George Please share your files  via RapidShare.com. Upto 200MB size files can be uploaded in http://www.rapidshare.com/ . After uploading they will provide
Posted - Fri Dec 11, 2009 9:01 am
 Suresh Babu.R.G
rgsbabu
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tip???
Dear fellow calculators, We could read recently a message of George Lane. He has Pegasus training files of no less than 9 mB. It seems to be that my provider
Posted - Thu Dec 10, 2009 11:14 am
 A.W.A.P. Bouman
awapbouman
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Re: Pegasus training file update
Hi all, I would also like to have a copy this latest version. Thanks in advance. Best Albert 2009/12/6 kamal lohia <kamallohia@...> ... -- Albert Xu
Posted - Mon Dec 7, 2009 9:23 am
 Albert Xu
xeeye_com
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Re: Pegasus training file update
Hi George, Thanks for sharing the info. Can you please forward a copy of latest version of Pegasus (v3.1) Thanking you in advance, Kamal Lohia ... From:
Posted - Sun Dec 6, 2009 3:00 pm
 kamal lohia
kamallohia
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Message History

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2009 51 22 11 16 4 32 20 52 47 56 5 8
2008 46 78 31 28 13 45 66 4 37 16 55 24
2007 5 21 5 8 10 46 51 12 19 76 74
2006 23 45 7 19 13 2 7 16 14 27 7
2005 49 19 31 21 32 23 39 44 19 8 26
2004 68 23 69 48 33 9 3 39 24 10 94 67
2003 191 64 147 106 103 24 6 42 15 20 36 5
2002 81 147 190

Group Email Addresses

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