Latin Numbers
Cardinal Numbers (How Many?) 1–20 with Notes # Latin Abbreviation Declines? 1 ūnus, ūna, ūnum I Yes (pronominal: gen. -īus, dat. -ī) 2 duo, duae, duo II Yes (see below) 3 trēs, tria III Yes (3rd decl. i-stem adj.) 4 quattuor IV (IIII) No 5 quīnque V No 6 sex VI No 7 septem VII No 8 octō VIII No 9 novem IX (VIIII) No 10 decem X No 11...