Iekopē un apskaties, jo nav no youtube....
http://www.metacafe.com/watch/296904/easy_graphical_multiplication_trick/
http://www.metacafe.com/watch/891715/math_trick_for_your_fingers_easy_multiplication/
http://www.metacafe.com/watch/1005625/math_is_so_easy/
http://www.metacafe.com/watch/10119820/ign_daily_fix_03_19_13/?source=playlist&passiveNav=1
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