
Q: Dear 100 HB:How do you use an abacus?Signed,Calculator ChallengedA: Dear Antiquity Minded MathematicianThe 100 HB did not know how to use an abacus before this question, and it did take some time to understand the fundamentals of abaci usage. First off, abacus is a Middle English version of a Latin word abax (calculating table). But it is thought...