Multiplying with an Abacus
Date: 3/12/96 at 15:15:23 From: Amy LeForge Subject: multiplying with an abacus Is it possible to multiply with an abacus? My students have searched for an hour and found only addition and subtraction. Help!
Date: 4/13/96 at 1:11:33 From: Doctor Jodi Subject: Re: multiplying with an abacus Hi there! I *believe* that the answer is yes. I asked Erez Kaplan, who is interested in the history of computing - including simple "computers" like the abacus - for information about multiplying with an abacus. He referred me to the following book: Abacus Arithmetic by Welton Crook, published by Pacific Books, Palo Alto, CA I haven't had a chance to look at it and I'd be interested to know what you find out. Good luck! -Doctor Jodi, The Math Forum
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