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how counting began
practical operation of the ten system
27 other sections not shown
12-system mathematics abacus accurate adopted advantages Answer Arabic Arabic numerals arithmetic Base 12 calculation cent coinage column common factor common logarithm complete accuracy computation cubic deci decimal logarithms divi divided dozen dry measure duodecimal logarithms duodecimal system eggs error exactly example existing expressed feet four-place fractional quantity given number inches instance invention limited revolving number logarithmic tables long division mantissa mathematicians means method metric system monthly interest multiplication tables nearest number base number system based number x numbers ending obvious odd numbers oooo o o o o o oooo oooo ooooo oooo ooooo oooo ooooo original possible fractions practical present number system prime number Problem quarter repeating decimal represent rithms Roman numerals sifr simple sion six-place decimal square subtract superior system of 12 tens tenths third tions totals twelfths twelve units weights and measures whole numbers zero