Grammar Summary: Numbers and Counting

Croatian numbers often put nouns in specific case and number. Counted nouns are sometimes not in plural when the number is greater than one. "Both" is also a number, here marked with "1+1". The forms 1-12 are:

#cardinals (2)ordin. (2nd)collective"n men"part (1/2)digit
1jedän adj.prvijedinica
2dva m/n; dvijë fdrugidvojedvojicapola, polovicadvojka
1+1oba m/n; objë fobojeobojica
3tritrećitrojetrojicatrećinatrojka
4četiričevrtičetveročetvoricačetvrtinačetvorka
5petpetipeteropetoricapetinapetica
6šestšestišesterošestoricašestinašestica
7sedämsedmisedmerosedmoricasedminasedmica
8osämosmiosmeroosmoricaosminaosmica
9devetdevetdeveterodevetoricadevetinadevetka
10desetdesetideseterodesetoricadesetinadesetka
11jedanaestjedanaestijedanaesterojedanaestoricajedanaestinajedanaestica
12dvanaestdvanaestidvanaesterodvanaestoricadvanaestinadvanaestica

Cardinal number jedän "one" behaves like an adjective.

Words for numbers 2-4 are sometimes declined but in everyday use most people keep their form in all cases. But if certain specially careful people want to use different forms for cases, the forms are:

case2 1+1 34
m, nfm, nf m, n, fm, n, f
nom. dvadvijë obaobjë tričetiri
acc.
dat. dvamadvjëma objëmaobjëma trima(četirma)
gen. dvajudvïju obajuobïju triju(četiriju)

Words for numbers 5-20 behave like adverbs. Counted nouns are after cardinal numbers must be in the right form:

1, 21, 31...any case, agrees with jedän imam jednu mačku
2-4, 1+1, 22-24, 32-24..."dual", a special form for adjectives, similar to gen. sg. for nouns imam dvijë mačke
5-19, 25-30...adjectives and nouns must be in gen. pl. imam pet mačäka

Ordinal numbers behave as adjectives, and change with nouns after them according to cases.

[to be updated]