The Romans had a particular set of numerals and had names for each of their numbers. In this section are listed some numbers and their corresponding symbol. 1 I unus 2 II duo 3 III tres 4 IV quattuor 5 V quinque 6 VI sex 7 VII septem 8 VIII octo 9 IX novem 10 X decem 11 XI undecim 12 XII duodecim 13 XIII tredecim 14 XIV quattuordecim 15 XV quindecim 16 XVI sedecim 17 XVII septendecim 18 XVIII duodeviginti 19 XIX undeviginti 20 XX viginti 21 XXI vigintiunus 22 XXII vigintiduo 30 XXX triginta 40 XL quadraginta 50 L quinquaginta 60 LX sexaginta 70 LXX septuaginta 80 LXXX octoginta 90 XC nonaginta 100 C centum 200 CC ducenti 300 CCC trecenti 400 CD quadrigenti 500 D quingenti 600 DC sescenti 700 DCC septigenti 800 DCCC octigenti 900 CM nongenti 1000 M mille 2000 MM duo milia