Study Abroad

Pakistan
January 23, 2012 4:47am CST
I can not even imagine some explanation to ustify this imoderate demand. While the Results of the times bables up 9 by 9 are constantly using when we multiply or divide the numbers expressed by several figures, the other operations appear much more rarely in ordinary computations. So why kids must memorize by herat the results of 13 by 16, 19 by 17, etc.?
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