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Improving Your Mental Math Skills?

Posted by Cliff on from the outperforming-an-abacus dept.

Infrared-Archer asks: "I want to learn how to do most math calculations in my head. That way I won't have to reach for the calculator for problems I should be able to do mentally. Of course there are various websites (beat the calculator) that show many tricks, but I am looking for a comprehensive solution (books, websites) that shows how to solve of wide range of math problems mentally. Any suggestions?"

1 of 136 comments (clear)

  1. Re:Best way by rixstep · · Score: 4, Funny

    Yeah, I basically do it the same way, except I usually use logarithms and double precision floating point, then I just round off (ceiling or floor) to the nearest 128-bit integer.

    Takes a bit of practice, but once you get the hang of it, it's a piece of cake.