eonecstatic over numbersA Multiplication Algorithm- March 16, 2008 supposedly used by Russian Peasants as claimed by A. Posamentier and I. Lehmann in chapter 6 of their book The (Fabulous) Fibonacci Numbers. Suppose you want to multiply 23 to 41. What you do is to write the numbers in two columns. In the first column you successively half (round down) while in the second ...http://unimodular.net/blog/?p=118 |