Kaktovik Inupiaq numerals
|Hindu–Arabic numeral system|
|Positional systems by base|
|Non-standard positional numeral systems|
|List of numeral systems|
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 were not adequate to represent the base-20 system, so students from Kaktovik, Alaska, came up with the Kaktovik Inupiaq numerals, which has since gained wide use among Alaskan Iñupiaq, and is slowly gaining ground in other countries where dialects of the Inuit language are spoken.
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. Twenty is written with a one and a zero, forty with a two and a zero, and four hundred with a one and two zeros.
The corresponding spoken forms are:
|tallimat||itchaksrat||tallimat malġuk||tallimat piŋasut||quliŋuġutaiḷaq|
|qulit||qulit atausiq||qulit malġuk||qulit piŋasut||akimiaġutaiḷaq|
|akimiaq||akimiaq atausiq||akimiaq malġuk||akimiaq piŋasut||iñuiññaŋŋutaiḷaq|
(19 is formed by subtraction from iñuiññaq 20, just as 9 is formed by subtraction from 10. See Inupiat language.)
In Greenlandic Inuit language:
(Dependent on the region in Greenland. Numbers differ, as do accents)