MentalCalculation : Mental Calculation

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Members: 810
Category: Mathematics
Founded: Oct 8, 2002
Language: English

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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.

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Re: Memoriad 2008 Photos Dear Jan, The download works fine. Thank you for sharing the photos. Ralf ... http://www.pi-world-ranking-list.com/Memoriad/thumbnails.html Posted - Mon Nov 24, 2008 8:24 am	ralf_laue Offline Send Email
Re: Memoriad 2008 Photos I tried to put my photos here : http://www.pi-world-ranking-list.com/Memoriad/thumbnails.html Please tell me if this works. Feel free to download any photos Posted - Sun Nov 23, 2008 8:59 pm	Jan van Koningsveld jan_van_koni... Offline Send Email
Re : [Mental Calculation] Mental Calculations Competitions: Ratings Hello George, +1... i am working on it. I am also interested about your ideas concerning this rating. But a question: how to pass the grades ? We need Posted - Thu Nov 20, 2008 9:24 pm	jean jean2ms Offline Send Email
Mental Calculations Competitions: Ratings System Proposal Hi folks, sorry it's been such a long time since I've written anything here - I've been busy on other projects. Still am really, but here I am. A few weeks Posted - Thu Nov 20, 2008 7:48 pm	George Lane george972453 Offline Send Email
Re: Memoriad 2008 Photos Some photos I clicked in my bad camera! John Louis ... From: Selçuk Soner Akgül <ssakgul@...> Subject: [Mental Calculation] Memoriad 2008 Photos To: Posted - Thu Nov 20, 2008 3:56 pm	JohnLouis Louis pjlmem Offline Send Email
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Message History

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2008	46	78	31	28	13	45	66	4	37	16	55
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

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