The abacus was initially used for arithmetic tasks. The Roman abacus was used in Babylonia as early as 2400 BC. Since then, many other forms of reckoning boards or tables have been invented. In a medieval European counting house, a checkered cloth would be placed on a table, and markers moved around on it according to certain rules, as an aid to calculating sums of money. COUNT 5
QSN1 What was the abacus first used for? ANS1 arithmetic tasks QSN2 When was the Roman abacus first used? ANS2 2400 BC QSN3 Where was the Roman abacus first used? ANS3 Babylonia QSN4 In medieval Europe was was placed on a table to help count money? ANS4 a checkered cloth QSN5 A checkered cloth on a table was used in medieval Europe to help count what? ANS5 sums of money