1 - unus, una, unum
2 - duo, duae, duo
3 - tres, tres, tria
4 - quattuor
5 - quinque
6 - sex
7 - septem
8 - octo
9 - novem
10 - decem
11 - undecim
12 - duodecim
13 - tredecim
14 - quattuordecim
15 - quindecim
16 - sedecim
17 - septendecim
18 - duodeviginti
19 - undeviginti
20 - viginti
21 - viginti unus
30 - triginta
40 - quadraginta
50 - quinquaginta
60 - sexaginta
70 - septuaginta
80 - octoginta
90 - nonaginta
100 - centum
200 - ducenti, ducentae, ducenta
300 - trecenti, trecentae, trecenta
400 - quadrigenti, quadrigentae, quadrigenta(*)
500 - quingenti, quingentae, quingenta
600 - sescenti, sescentae, sescenta
700 - septingenti, septingentae, septingenta
800 - octingenti, octingentae, octingenta
900 - nongenti, nongentae, nongenta
1000 - mille
2000 - duo milia
Take the Cardinal Numbers Quiz
See Latin adjectives for information about using the correct form of a number/adjective, and Latin Gender for the 3 genders. Also see: Roman Numerals, Comparison of Italian and Latin Numbers, and Roman Fractions
(*)I don't know if this tip will help you, but it does help me when I'm looking at the spelling and trying to decide whether a part of the numeral is "20" (viginti) or "100" (centum).
septuaginta vs. septingentiVisually they look similar and I can't easily distinguish the sounds by pronouncing them aloud to myself.
- The initial sound of centum, /k/, is a voiceless velar. /g/ is the voiced velar. Say: CENTUM and then say GENTUM. They're pretty close. Whether you pronounce the sound voiced or unvoiced depends on what precedes it. So, I don't look at whether there is a "c" or a "g".
- Note that in the compounds there is often a condensed version of viginti (gint-), so you can't count on the "vi" to tell you the answer.
- In the compound numbers, I look beyond the c/g to the vowel. If it's an "i", as in "gint", it's 20 (really, some multiple of ten), if it's an "e", as in "gent" or "cent", it's a multiple of 100.
More on Latin Adjectives
Romance Languages: Counting Numbers
| Eng | Latin | French | Italian | Spanish | |
| 1 | one | unus | un | uno | uno |
| 2 | two | duo | deux | due | dos |
| 3 | three | tres | trois | tre | tres |
| 4 | four | quattuor | quatre | quattro | cuatro |
| 5 | five | quinque | cinq | cinque | cinco |
| 6 | six | sex | six | sei | seis |
| 7 | seven | septem | sept | sette | siete |
| 8 | eight | octo | huit | otto | ocho |
| 9 | nine | novem | neuf | nove | nueve |
| 10 | ten | decem | dix | dieci | diez |

