Numerals

The original complex numerical system of the Latin language is simplified into having only thre forms, i.e. Cardinal, Ordinal, and Adverbial. Also, the declension of the number 1, 2, and three still exist, The reason for the declension of the numeral 1 has also served as the Romance indefinite article which automatically needs to be declined. The declension of 1 is like first & second adjective declension while 3 is the third declension. Numeral 2 is irregular.

1: unus, a, um
2: duo, duae, duo
3: tres, tria
4: quatuor
5: quinqque
6: sex
7: septem
8: octo
9: novem
10: decem
11: unus et decem
12: duo et decem
18: duodeviginti
19: undeviginti
20: vinti
21: unus et viginti
28: duodetriginta
29: undetriginta
30: triginta
40: quadraginta
50: quinginta
60: sexuaginta
70: septuaginta
80: octuaginta
90: nonginta
100: centum
200: ducenti
300: trecenti
400: quatricenti
500: quincenti
600: sescenti
700: septincenti
800: octincenti
900: noncenti
1000: mille
2000: duo milia
10000: decem milia
100000: centum milia
1000000: millionis
1000000000: miliardus

-two-
Nom. plr. duo, duae, duo
Gen. plr. duorum, duarum, duorum
Acc. plr. duos, duas, duo
Abl. plr. duobus, duabus, duobus