·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
·千位数举例
M,1000 MC,1100 MCD,1400 MD,1500 MDC,1600 MDCLXVI,1666 MDCCCLXXXVIII,1888 MDCCCXCIX,1899 MCM,1900 MCMLXXVI,1976 MCMLXXXIV,1984 MCMXC,1990 MM,2000 MMMCMXCIX,3999