Cardinal Numbers

These numerals also serve as pronouns and, in the case of unus, duo and tres, indefinite articles or adjectives.

unus (a, one)

      masc.     fem.      neut.
nom.  unus      una       unum
acc.  unum      unam      unum
gen.  unius     unius     unius
dat.  uni       uni       uni
abl.  uno       una       uno

Example(s):

    unus uir, una poma, unum templum. (a man, an apple, one temple.)

duo (two)

      masc.      fem.       neu.
nom.  duo        duæ        duo
acc.  duos       duas       duo
gen.  duorum     duarum     duorum
dat.  duobus     duabus     duobus
abl.  duobus     duabus     duobus

Example(s):

    duo uires, duarum mulieres, duobus templis. (two men, of the two women, by both temples.)

tres (three)

      masc.      fem.       neut.
nom.  tres       tres       tria
acc.  tres       tres       tria
gen.  trium      trium      trium
dat.  tribus     tribus     tribus
abl.  tribus     tribus     tribus

Example(s):

    tres iuuenes, tribus mulieribus, trium iugorum. (two young men, to the two women, of three passes [in the hills].)