How do you say the numbers 1 through 10 in Latin?

Answer 1

1 - ūnus

2 - duo

3 - trēs

4 - quattuor

5 - quīnque

6 - sex

7 - septem

8 - octō

9 - novem

10 - decem

11 - ūndecim

12 - duodecim

13 - trēdecim

14 - quattuordecim

15 - quīndecim

16 - sēdecim

17 - septendecim

18 - duodēvīgintī

19 - ūndēvīgintī

20 - vīgintī

Answer 2

Duo milia. Unlike one thousand, which is an indeclinable (unchanging) mille, the multiple thousands are treated as nouns, with the thing counted in the genitive case. So, for example, "two thousand soldiers" is duo milia militum, literally "two thousands of soldiers". If the phrase is not the subject or object of a sentence, the words duo milia must change accordingly:

• exercitus duorum milium militum - "an army of two thousand soldiers"
• cum duobus milibus militum - "with two thousand soldiers"

Answer 3

The numbers one, two and three are declined in Latin - that is, they must agree with their noun in gender and case; four through ten are indeclinable.

unus-a-um, duo-ae-o, tres-es-ia, quattuor, quinque, sex, septem, octo, novem, decem.