Unus (I)
One, 1
Duo (II)
Two, 2
Tres (III)
Three, 3
Quattuor (IV)
Four, 4
Quinque (V)
Five, 5
Sex (VI)
Six, 6
Septem (VII)
Seven, 7
Octo (VIII)
Eight, 8
Novem (IX)
Nine, 9
Decem (X)
Ten, 10
Centum (C)
One hundred, 100
Mille, milia (M)
One thousand, 1000