Exemplum:
vīgintī annīs post = vīcēsimō annō post.
20. vīcēsimus -a -um 80. octōgēsimus 500. quīngentēsimus
30. trīcēsimus 90. nōnāgēsimus 600. sescentēsimus
40. quadrāgēsimus 100. centēsimus 700. septingentēsimus
50. quīnquāgēsimus 200. ducentēsimus 800. octingentēsimus
60. sexāgēsimus 300. trecentēsimus 900. nōngentēsimus
70. septuāgēsimus 400. quadringentēsimus 1000. mīllēsimus
1. trīgintā [XXX] annīs post = trīcēsimō annō post.
2. quadrāgintā [XL] annīs post = quadrāgēsimō annō post.
3. quīnquāgintā [L] annīs post = quīnquāgēsimō annō post.
4. sexāgintā [LX] annīs post = sexāgēsimō annō post.
5. septuāgintā [LXX] annīs post = septuāgēsimō annō post.
6. octōgintā [LXXX] annīs post = octōgēsimō annō post.
7. nōnāgintā [XC] annīs post = nōnāgēsimō annō post.
8. centum [C] annīs post = centēsimō annō post.
9. ducentīs [CC] annīs post = ducentēsimō annō post.
10. trecentīs [CCC] annīs post = trecentēsimō annō post.
11. quadringentīs [CCCC] annīs post = quadringentēsimō annō post.
12. quīngentīs [D] annīs post = quīngentēsimō annō post
13. sescentīs/sexcentīs [DC] annīs post = sescentēsimō/sexcentēsimō annō post.
14. septingentīs [DCC] annīs post = septingentēsimō annō post.
15. octingentīs [DCCC] annīs post = octingentēsimō annō post.
16. nōngentīs [CM] annīs post = nōngentēsimō annō post.
17. mīlle [M] annīs post = mīllēsimō annō post.