Base ten number systems were invented repeatedly. The oldest positional number system we know about is the (base 60) system from Mesopotamia. Other ancient peop

Base ten number systems were invented repeatedly. The oldest positional number system we know about is the (base 60) system from Mesopotamia. Other ancient people also used positional base 10 systems for calculation, including in China, Egypt, and Greece, but their written numerals were not positional in the same way. India is the first place where we have evidence of a base-ten number-writing system with 10 symbolic digits whose contribution to a number depends on the place.