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Numeral systems by culture
Hindu-Arabic numerals
Eastern Arabic Indian family Khmer	Mongolian Thai Western Arabic
East Asian numerals
Chinese Counting rods Japanese	Korean Suzhou
Alphabetic numerals
Abjad Armenian Āryabhaṭa Cyrillic	Ge'ez Greek (Ionian) Hebrew
Other systems
Attic Babylonian Brahmi Egyptian Etruscan Inuit	Mayan Quipu Roman Urnfield
List of numeral system topics
Positional systems by base
Decimal (10)
1, 2, 3, 4, 5, 8, 12, 16, 20, 60, more…
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Inuit, like other Eskimo languages (and Celtic and Mayan languages as well), uses a vigesimal counting system. Inuit counting has sub-bases at 5, 10, and 15.

Arabic numerals weren't adequate to represent the base-20 system, so students from Kaktovik, Alaska came up with an Inuit numeral system that has since gained wide use among Alaskan Iñupiaq, and is slowly making ground in other countries where Inuit is also spoken^[1]

The numeral system has helped to revive counting in Inuit, which had been falling into disuse among Inuit speakers due to the prevalence of the base-10 system in schools.

The picture below shows the numerals 1–19 and then 0.

[edit] References

1. ^ http://www.ankn.uaf.edu/SOP/SOPv2i1.html

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