--- In [email protected], cmhardw <[EMAIL PROTECTED]>
wrote:
>
> So anyway, I'm very very interested in learning speed mental
> arithmetic and am looking for others who are or have been interested
> for a while. This is all new to me, and it would be awesome to hear
> some advice from someone who already does this ;-)
How fast can you let's say multiply two 3-digit or two 4-digit numbers
in your head?
- Hardcore version: somebody tells you the two factors, then you
think, then you say the result *after* your calculation (i.e. you must
say the result quickly).
- Kindergarten version: You write both factors down, then you think
and write the result down (can be mixed, i.e. you can write down
digits of the result *during* your calculation). You can't write
anything down besides the factors and the result.
Cheers!
Stefan
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