The Balinese language has an elaborate decimal numeral system.
The numerals 1–10 have basic, combining, and independent forms, many of which are formed through reduplication . The combining forms are used to form higher numbers. In some cases there is more than one word for a numeral, reflecting the Balinese register system; _halus_ (high-register) forms are listed in italics.
Final orthographic _-a_ is a schwa .
NUMERAL BASIC COMBINING INDEPENDENT
1 besik a-, sa-* abesik, aukud
2 dua duang- dadua
_kalih_ _kalih-_ _kakalih_
3 telu telung- tetelu
_tiga_ _tigang-_ _tetiga_
4 (em)pat petang- pa(t)pat
5 lima limang- lelima
6 (e)nem nem- ne(m)nem
7 pitu pitung- pepitu
8 (a)kutus kutus-, ulung- akutus
9 (a)sia sia-, sangang- Asia
10 (a)dasa dasa- adasa
* A less productive combining form of _a-_ 1 is _sa-_, as can be seen in many of the numbers below. It, _ulung-_, and _sangang-_ are from Javanese . _Dasa_ 10 is from Sankrit _désa_.
TEENS, TWEENS, AND TENS
Like English, Balinese has compound forms for the teens and tens; however, it also has a series of compound 'tweens', 21–29. The teens are based on a root _*-welas_, the tweens on _-likur_, and the tens are formed by the combining forms above. Hyphens are not used in the orthography, but have been added to the table below to clarify their derivation.
UNIT TEENS TWEENS TENS
1 solas 11 se-likur 21 (a-dasa 10)
2 rolas 12 dua-likur 22 duang-dasa 20
3 telu-las 13 telu-likur 23 telung-dasa 30
4 pat-belas 14 pat-likur 24 petang-dasa 40
5 lim-olas 15 salaé 25 seket 50
6 nem-belas 16 nem-likur 26 nem-dasa 60
7 pitu-las 17 pitu-likur 27 pitung-dasa 70
8 pelekutus 18 ulu-likur 28 kutus-dasa, ulung-dasa 80
9 siang-olas 19 sanga-likur 29 sia-dasa, sangang-dasa 90
The high-register combining forms _kalih-_ 2 and _tigang-_ 3 are used with _-likur, -dasa,_ and higher numerals (below), but not for the teens.
The teens are from Javanese, where the _-olas_ forms are regular, apart from _pele-kutus_ 18, which is suppletive . _Sa-laé_ 25 (one thread ), and _se-ket_ 50 (one tie ) are also suppletive, and cognate with Javanese _səlawé_ 25 and _səkət_ 50.
There are additional numerals _pasasur ~ sasur_ 35 and _se-timahan ~ se-timan_ 45 (one opium packet ), and a compound _telung-benang_ (three threads ) for 75.
The unit combining forms are combined with _atus_ 100, _atak_ 200, _amas_ 400, _tali_ 1000, _laksa_ 10,000, _keti_ 100,000, and _yuta_ 1,000,000 as they do with _dasa_ 10:
300 telung-atus _(tigang-atus)_
600 telung-atak _(tigang-atak)_
800 domas ( ← *dua-amas or *ro-amas)
2000 duang-tali _(kalih-tali)_