Dear Ralf, All I personally would like to see is more tasks (a division task – something like dividing 8d by 8d and giving answer to 8d) and more emphasis on...
6 by 6s can be split into 4 3 by 3s. 3 by 3s is the usual size of the domain in which mental calculators can act creatively with multiplication (thus fulfiling...
Hi everybody: I think is better to keep 10 times 8 X 8 in 15 minutes. But if we change to 6 x 6 is better in 6 or 7 minutes, because in ten minutes favors...
... Dear Robert, Thank you for sharing your opinions. The idea behind this suggestion was that on one hand several calculators want to increase the number of...
Dear Alberto, you d'ont tkink that 8*8 in 15 minutes is also slow, ... change to 6 x 6 is better in 6 or 7 minutes, because in ten minutes favors slowers...
Dear Ralf - You are right. That would be a good compromise. Also, I agree entirely with Alberto's opinion about the time allowance for the 6x6. Best wishes, ...
I must admit that I don't get the point about the time problem for the tasks that some have. It is not true that a slower calculator has an advantage just...
Dear Jan, Can you just clarify one thing: If the correct answer is 123456 (the question is irrelevant), of the two given answers: A 100000 B 323456 B would...
Hi everybody, in my opinion i think is better to do like this: first round: 1)10 6x6 in 10 minute 2)10 additions (10,10)10 minute than select the participants...
Dear friends May I try to enlarge the confusion? If I have understood Jan well, Jan pleads for awarding correct decimals and subtraction of wrong decimals. ...
... Jan pleads for awarding correct decimals and subtraction of wrong decimals. ... Hello, I am convinced that there should not be a difference between "wrong"...
To Ralf and Robert: If we say that in the second round speed should be more important than accuracy (which is what Robert would like to have if I understand it...
Hello, As it will never be possible to calculate the exact root, every result has to be an estimation. The calculator who estimates best is the better one. In...
But 8 is definetly wrong ! 8 = 008 and not 800, which means no correct digit! Like Robert said, take another system which is not base 10 und see what happens. ...
Like Jan, I find that particular detail of the square root scoring rule ("8=800") strange. Regarding the 'exact tasks', the scoring system should not...
Hello, here is another suggestion to make a single error less important : In the second round there will be 20 tasks of 5x5 multiplication in 5 min and 20...
Round 2 would then become the 'easy round' instead of the proposed 'speed round'. ... __________________________________________________________ Sent from...
Dear ralf, a three month before the competition for the challenge, in that case it not a challenge, it should for a maximum two weeks before or even i prefer...
OK then let's completely forget about it and just leave it the way it was in 2006. Even though I don't get the point about your "easy round instead of speed...
... it was in 2006. Hello, From the previous discussion, it seems to me that this will become the conclusion. For almost all suggestions, there were...
Dear Ralf, Your position is ot be envied, I fully agree. And I am fully aware that eventual changes require a maximum of diplomacy from your side. The only...
Dear Ralf, and calculators, To change or not to change, that 's the question. I see many names of the MC's passing by, I know of them less or more personally...
Dear Mr.Bouman, Would it be good if the competition was divided into 2 parts? Perfective tasks - The tasks are routine and the Mental calculator would perfect...
Dear Josh, In priciple I welcome every idea for realising the MC's versatility. This week I received a mail from Ralf Laue- I send him a copy of this answer -...
Dear ralf, regarding square root rule, I am thinking if possible to change the rule a little, As many calculcators are now used to extract first and second,...
Hello, Once again, it's time for some news about the Mental Calculation World Cup 2008: * Registrations received so far: Jan van Koningsveld (Germany) Willem...
Dear friends, I am very, very amazed, let me tell you why. During 45 years I hided my (calculation) light under a bushel. My wife, my children, my work and my...
Hello .... Just one question. How method do you use to calculate quickly (in mental and in paper)? I studied the Vedic Method and i not very happy with the...
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