- 40.000 years BC: Gashes on wood and bone, probably to count
- 20.000 engraved or painted Lines, probably to count
- 9.000 Calculi: marbles, cones and sticks to count 
- 4.000 Sumero-Akkadian Script, the first known Elamite decimal numeration in Sumer
- 3.500 Calculations on soft clay in Suze and Sumer
- 3.200 decimal and sexagesimal mixed numeration in Sumer
- 3.000 decimal numeration in Akkadia, numeration in base 4 in Mesopotamia
- 2.700 decimal numeration in Egypt
- 2.650 invention of abacus for calculation in Iraq
- 2.500 Semitic decimal numeration in Mesopotamia, numeration in base 60 in the Mesopotamian South
- 2.350 decimal numeration among all of Mesopotamians
- 2.300 proto-Indian numeration in base 4 
- 2.000 Invention of the Gurumikhi, an analogical calculator , Hittite and Indusian decimal numeration
- 1.900 Babylonian decimal numeration
- 1.600 Development of Mathematics in Sumer
- 1.500 Assyrian decimal numeration
- 1.500 numeration in base 4 in Anatolia
- 1.100 Invention of abacus in China
- 650 Etruscan decimal numeration
- 600 Phoenician numeration in base 3 
- 500 Indusian decimal numeration noted down in SansKrit, Zapothec and pre-Colombian numeration in base 20 , numeration in base 4 in Greece, numeration in base 5 in Yemen
- 200 Chinese learned numeration in base 1 and 5

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