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Yes: I was taught it in school aged 11 or 12. *NM* Tim Send a noteboard - 29/02/2012 11:33:22 PM
Vigilantibus non dormientibus jura subveniunt.

—Nous disons en allemand : le guerre, le mort, le lune, alors que 'soleil' et 'amour' sont du sexe féminin : la soleil, la amour. La vie est neutre.

—La vie ? Neutre ? C'est très joli, et surtout très logique.
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Does anybody know this math trick? Dark Knight - 29/02/2012 07:29:58 PM 828 Views
Sure, it's an artifact of base 10 Isaac - 29/02/2012 08:24:18 PM 617 Views
Your own fault for doing lots of math. Joel - 29/02/2012 08:37:39 PM 672 Views
More my fault for having a algebra textbook that obsessed with abnormal base calculations Isaac - 29/02/2012 09:19:15 PM 671 Views
I think I had one like that one year. Joel - 02/03/2012 04:16:26 AM 817 Views
Your method for 11 might be even quicker! Dark Knight - 29/02/2012 08:46:44 PM 500 Views
I think it's basically the same method, but if not enjoy Isaac - 29/02/2012 09:16:21 PM 476 Views
That's what I've always used. Nate - 29/02/2012 09:24:05 PM 502 Views
Squares and factoring are also your friend. Joel - 02/03/2012 03:56:08 AM 630 Views
Yes: I was taught it in school aged 11 or 12. *NM* Tim - 29/02/2012 11:33:22 PM 204 Views
That is wayyyyy more complicated than 10x+x. But if it works for you, I am happy. *NM* Ghavrel - 01/03/2012 07:16:40 AM 222 Views
Not really Dark Knight - 01/03/2012 04:24:20 PM 459 Views
That's, uh... the same thing. Ghavrel - 01/03/2012 08:38:03 PM 440 Views
Again, it's the doing it in your head thing Dark Knight - 01/03/2012 10:27:01 PM 560 Views
Yes. It's called multiplication. *NM* Dreaded Anomaly - 02/03/2012 12:40:20 AM 267 Views
Har har har. Why even comment? *NM* Dark Knight - 02/03/2012 05:15:05 AM 207 Views
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