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The Sumerian abacus, a table of successive …
Years: 2493BCE - 2350BCE
The Sumerian abacus, a table of successive columns that delimits the successive orders of magnitude of their sexagesimal number system, first appears in the the period 2700–2300 BCE.
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Years: 2493BCE - 2350BCE
Groups
Topics
Subjects
Regions
Subregions