Counting in Ido
Language overview
Founded in 1907 and based on Esperanto, Ido is a constructed language aimed at becoming a universal second language for speakers of different linguistic backgrounds, which is quite a good definition for an international auxiliary language.
Ido numbers list
- 1 – un
- 2 – du
- 3 – tri
- 4 – quar
- 5 – kin
- 6 – sis
- 7 – sep
- 8 – ok
- 9 – non
- 10 – dek
- 11 – dek-e-un
- 12 – dek-e-du
- 13 – dek-e-tri
- 14 – dek-e-quar
- 15 – dek-e-kin
- 16 – dek-e-sis
- 17 – dek-e-sep
- 18 – dek-e-ok
- 19 – dek-e-non
- 20 – duadek
- 30 – triadek
- 40 – quaradek
- 50 – kinadek
- 60 – sisadek
- 70 – sepadek
- 80 – okadek
- 90 – nonadek
- 100 – cent
- 1,000 – mil
- one million – un milion
- one billion – un miliardo
- one trillion – un biliono
Ido numbering rules
Now that you’ve had a gist of the most useful numbers, let’s move to the writing rules for the tens, the compound numbers, and why not the hundreds, the thousands and beyond (if possible).
- Digits from one to nine are specific words: un [1], du [2], tri [3], quar [4], kin [5], sis [6], sep [7], ok [8], and non [9].
- Tens are formed by prefixing the word for ten (dek) by its multiplier digit, followed by the letter a, except for ten itself: dek [10], duadek [20], triadek [30], quaradek [40], kinadek [50], sisadek [60], sepadek [70], okadek [80], and nonadek [90].
- Compound numbers are formed by linking the ten with its unit digit with the word e (and) separated with dashes (e.g.: dek-e-un [11], quaradek-e-kin [45]).
- Hundreds are formed by prefixing the word for hundred (cent) by its multiplier digit, followed by the lettre a, except for one hundred itself: cent [100], duacent [200], triacent [300], quaracent [400], kinacent [500], sisacent [600], sepacent [700], okacent [800], and nonacent [900].
- Thousands are formed like hundreds, i.e. by prefixing the word for thousand (mil) by its multiplier digit, followed by the lettre a, except for one thousand itself: mil [1,000], duamil [2,000], triamil [3,000], quaramil [4,000], kinamil [5,000], sisamil [6,000], sepamil [7,000], okamil [800], and nonamil [9,000]. Higher multiples of one thousand are formed the same way (e.g.: dekamil [10,000], centamil [100,000]).
- Higher scale numbers follow the long scale numbers rule in which every new term greater than million is one million times the previous term: un milion [1 million] (106), un miliardo [1 billion] (109), un biliono [1 trillion] (1012).
Write a number in full in Ido
Let’s move now to the practice of the numbering rules in Ido. Will you guess how to write a number in full? Enter a number and try to write it down in your head, or maybe on a piece of paper, before displaying the result.
Articles
![]() |
International Auxiliary Languages and Wikipedia International Auxiliary Languages have found on Wikipedia a new space to expand their reach. If Esperanto and Volapük are the most used IAL, Ido, Interlingua, Interlingue, and Novial are also present in the picture. Let’s see their publication rate over the years to get a better feeling of their progression. |
Links
Auxiliary languages
Afrihili, Ba kom, Babm, Bolak, Ceqli, Digisk Folkspraak, Esperanto, Folkspraak, Globasa, Glosa, Guosa, Idiom neutral, Ido, Intal, Interlingua, Interlingue, Interslavic, Kotava, Langue nouvelle, Latino sine flexione, Lingua Franca Nova, Lingwa de planeta, Mondial, Mondlango, Nove Latina, Pandunia, Panglobish, Ro, Romanid, Slovio, Solresol, Sona, Spokil, Tutonish, Universalglot, Uropi, and Volapük.
Other supported languages
As the other currently supported languages are too numerous to list extensively here, please select a language from the full list of supported languages.