·个位数举例　　I, 1 II, 2 III, 3 IV, 4 V, 5 VI, 6 VII, 7 VIII,8 IX, 9　　·十位数举例　　X, 10 XI, 11 XII, 12 XIII, 13 XIV, 14 XV, 15 XVI, 16 XVII, 17 XVIII, 18 XIX, 19 XX, 20 XXI, 21 XXII, 22 XXIX, 29 XXX, 30 XXXIV, 34 XXXV, 35 XXXIX, 39 XL, 40 L, 50 LI, 51 LV, 55 LX, 60 LXV, 65 LXXX, 80 XC, 90 XCIII, 93 XCV, 95 XCVIII, 98 XCIX, 99　　·百位数举例　　C, 100 CC, 200 CCC, 300 CD, 400 D, 500 DC,600 DCC, 700 DCCC, 800 CM, 900 CMXCIX,999　　·个位数举例　　I, 1 II, 2 III, 3 IV, 4 V, 5 VI, 6 VII, 7 VIII,8 IX, 9　　·十位数举例　　X, 10 XI, 11 XII, 12 XIII, 13 XIV, 14 XV, 15 XVI, 16 XVII, 17 XVIII, 18 XIX, 19 XX, 20 XXI, 21 XXII, 22 XXIX, 29 XXX, 30 XXXIV, 34 XXXV, 35 XXXIX, 39 XL, 40 L, 50 LI, 51 LV, 55 LX, 60 LXV, 65 LXXX, 80 XC, 90 XCIII, 93 XCV, 95 XCVIII, 98 XCIX, 99　　·百位数举例　　C, 100 CC, 200 CCC, 300 CD, 400 D, 500 DC,600 DCC, 700 DCCC, 800 CM, 900 CMXCIX,999。