Roman Numerals Match Roman Numberals to our numbers I = 1 V = 5 X = 10 L = 50 C = 100 Tools A B 5 V 10 X 1 I 11 XI 12 XII 8 VIII 9 IX 4 IV 6 VI 14 XIV 15 XV 16 XVI 17 XVII 18 XVIII 19 XIX 20 XX 2 II 3 III 7 VII 25 XXV 24 XXIV 26 XXVI 21 XXI 27 XXVII 29 XXIX 30 XXX 34 XXXIV 37 XXXVII 39 XXXIX 40 XL 50 L 60 LX 70 LXX 80 LXXX 90 XC 100 C