ūnus
one
I
1
duo
two
II
2
trēs
three
III
3
quattuor
four
IV
4
quīnque
five
V
5
sex
six
VI
6
septem
seven
VII
7
octō
eight
VIII
8
novem
nine
IX
9
decem
ten
X
10
ūndēcim
eleven
XI
11
duodēcim
tweleve
XII
12
trēdecim
thirteen
XIII
13
quattuordecim
fourteen
XIV
14
quīndecim
fifteen
XV
15
sedecim
sixteen
XVI
16
septendecim
seventeen
XVII
17
duodevigintī
eighteen
XVIII
18
ūndēvīgintī
nineteen
XIX
19
vīgintī
twenty
XX
20