Hello, The city of Annaberg-Buchholz has published some information about the MC World Cup in Ocotber on their web site, including a list of registered...
The most baffling thing about 13th roots (to me) is the amount of attention they receive. I don't get it, really. However, an idea did occur to me some time...
Hi, Is there a website with all of these theorems for mental calculation? is there atleast someone that will hopefully lead me in the right direction in...
Hello Jason, a great idea. Probably I need too much time in this case (more than one minute). Thank you, Gert...
Fleissdr@...
Jun 13, 2004 9:19 pm
1423
Hi, I wold like to get some abacus for students, study materials and teacher's abacus if any body know where to get these Please inform me. T A Thampan...
... Hello, for example, you can order them at https://www.soroban.com/deal_eng.html. Note that there is another Yahoo group dedicated to this theme: ...
Dear Folks-- I would like to begin learning Mental Calculation. Though not an unintelligent person, I've never been strong at it, and I've only now begun to...
Dear T.L Lawrence (with no first name given): I believe that the book by Ron Doerfler entitled "Dead Reckoning: Calculating without instruments" is the best...
NIXON, Grant (Kanata)
GNIXON@...
Jun 30, 2004 1:50 pm
1428
u should start by henry sticker book "how to calculate quickly," plus u should practice about three hours a day u will see how good u will be after three years...
Hello there. Although there are many good books on the subject of mental calculations, indeed I have a book coming out myself later this year, I think you...
Hello, I just would like you to remind that the deadline for sending in the application form for the Mental Calculation World Cup is 31 August. Please see...
Your application form (for Divesh Ramanlal Shah) has arrived in Annaberg. You should hear from the organisers in Annaberg within the next couple of days. There...
Honable Sir, Kindly sene me the address and contact no of all inidan confirmed participants so far. Thanking you Arun Mangal India www.humancalender.com E Mail...
arun mangal
arunmangal@...
Aug 7, 2004 6:18 pm
1435
... Hello, You can reach all Indian participants by sending an e-mail to indiancalculators@yahoogroups.com. (You should be a member of the group ...
Hi Ralf: About World Cup in Annaberg, I would like to play in 3: addition, multiplication and the day of the week. Is this possible?, is good for me? Is there...
... Yes, you can take part in single events only. There is a separate title for addition, another title for multiplication etc. However, of course the overall...
I have interresting tips on how assimilate table up to 100 X 100 and event far beyond (1000 x1000) based on quite few facts With average time for all those...
Emmanuel.DUBRULLE@...
Aug 18, 2004 2:57 pm
1440
on 8/19/04 5:12 AM, MentalCalculation@yahoogroups.com at ... Well, care to elaborate? Michel Asselin...
To answer people who wrote me email in private; and all the others; I do not retain secrets therefore I share and open on the group :) I'm actually writing an...
Emmanuel.DUBRULLE@...
Aug 20, 2004 6:44 am
1442
About GP Bidder : I quote him because he gave me the idea of looking for facts making possible to shorten my calculations. "Now, gentlemen, I wish particularly...
Emmanuel.DUBRULLE@...
Aug 20, 2004 7:47 am
1443
EDcei> "Now, gentlemen, I wish particularly to impress upon you, that in order to EDcei> multiply up to 3 places of figures by 3 figures, the number of facts I...
Oleg Stepanov
olegstepanov@...
Aug 20, 2004 9:06 am
1444
Okey, Oleg and I have 3 different notions of facts :)) However ; 50 facts up to 10 times 10: not correct I think as it must be (n*n+1)/2 => 55 By facts I was...
Emmanuel.DUBRULLE@...
Aug 20, 2004 10:06 am
1445
EDcei> Okey, Oleg and I have 3 different notions of facts :)) EDcei> However ; 50 facts up to 10 times 10: not correct I think as it must be (n*n+1)/2 =>> 55 ...
Oleg Stepanov
olegstepanov@...
Aug 20, 2004 10:32 am
1447
yes ... From: "dpillas" <dpillas@...> To: <MentalCalculation@yahoogroups.com> Sent: Sunday, August 22, 2004 4:43 AM Subject: [Mental Calculation] 5th...
arun mangal
arunmangal@...
Aug 22, 2004 3:30 am
1448
Hi all, I was wondering if any of you ever tried calendar calculation by means of a perpetual calendar. I am trying it these days and although one may have to...
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