Numbers

Cardinal numbers are the ones used for counting : one, two , three . . .
ūnus, -a, -um; duo, -ae, -o, and trēs, tria have Masculine, Feminine, and Neuter forms, and are declined
From quattuor (pronounced KWAT-uh-wor) to centum the Cardinals are "indeclinable" (they are not declined)
ducentī, -ae, -a, through nōngentī, -ae, -a, have Masculine, Feminine, and Neuter forms and are declined.
mīlle is also declined - see chapter 15 of Wheelock.
Note : duodēvīgintī "two from twenty" and ūndēvīgintī "one from twenty"

Ordinals are used when indicating the order in which something comes : first, second, third . . .
Ordinals are adjectives - they have to "agree" with the noun they are describing. The table below gives the Masculine Nominative, e.g. prīmus. Feminine is prīma, Neuter is prīmum
Ordinals were often used for the praenomen (first name) of a Roman citizen.
Quintus might have been the fifth child of Caecilius. An inscription in the house of Caecilius at Pompeii refers to two sons, Quintus and Sextus. For the sake of the story, the Cambridge textbook only has one son in the family. The names of the other characters and the dog in the story are made up.

 

NumbersCardinalOrdinal
1Iūnus, ūna, ūnumprīmus
2IIduo, duae, duosecundus
3IIItrēs, trēs, triatertius
4IVquattuorquārtus
5Vquīnquequīntus
6VIsexsextus
7VIIseptemseptimus
8VIIIoctōoctāvus
9IXnovemnōnus
10Xdecemdecimus
11XIūndecimūndecimus
12XIIduodecimduodecimus
13XIIItredecimtertius decimus
14XIVquattuordecimquārtus decimus
15XVquīndecimquīntus decimus
16XVIsēdecimsextus decimus
17XVIIseptendecimseptimus decimus
18XVIIIduodēvīgintīduodēvīcēsimus
19IXXūndēvīgintīūndēvīcēsimus
20XXvīgintīvīcēsimus
21XXIvīgintī ūnus
ūnus et vīgintī
vīcēsimus prīmus
30XXXtrīgintātrīcēsimus
40XLquadrāgintāquadrāgēsimus
50Lquinquāgintāquinquāgēsimus
60LXsexāgintāsexāgēsimus
70LXXseptuāgintāseptuāgēsimus
80LXXXoctōgintāoctōgēsimus
90XCnōnāgintānōnāgēsimus
100Ccentumcentēsimus
101CIcentum ūnuscentēsimus prīmus
200CCducentīduocentēsimus
300CCCtrecentītrecentēsimus
400CCCCquadrigentīquadrigentēsimus
500Dquīngentīquīngentēsimus
600DCsescentīsesgentēsimus
700DCCseptingentīseptingentēsimus
800DCCCoctingentīoctingentēsimus
900DCCCCnōngentīnōngentēsimus
1000Mmīllemīllēsimus
2000MMduo mīliabis mīllēsimus

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Dr. Rollinson

ENMU Station 19
Portales, NM 88130

Last Updated: July 26, 2010

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