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Roman Numerals to Arabic Numbers 10 to 1000 by 10

Different from Arabic numbers , there are 7 Roman numerals: I, V, X, L, C, D and M, where V is equal to 5 and M is equal to 1000.

RomanArabic
I1
V5
X10
L50
C100
D500
M1000
ArabicRoman
1I
5V
10X
50L
100C
500D
1000M

The basic rule is when the larger number is in front, then add, while when the smaller number is in front, the minus. For example:

Convert Rules:

The following is the table to convert from Roman numerals to Arabic numbers. For example,

NumberThousandsHundredsTensOnes
1MCXI
2MMCCXXII
3MMMCCCXXXIII
4 CDXLIV
5 DLV
6 DCLXVI
7 DCCLXXVII
8 DCCCLXXXVIII
9 CMXCIX

The following is the conversion from Roman numerals to Arabic numbers for 10 to 1000 by 10:

RomanArabicRomanArabic
X10DX510
XX20DXX520
XXX30DXXX530
XL40DXL540
L50DL550
LX60DLX560
LXX70DLXX570
LXXX80DLXXX580
XC90DXC590
C100DC600
CX110DCX610
CXX120DCXX620
CXXX130DCXXX630
CXL140DCXL640
CL150DCL650
CLX160DCLX660
CLXX170DCLXX670
CLXXX180DCLXXX680
CXC190DCXC690
CC200DCC700
CCX210DCCX710
CCXX220DCCXX720
CCXXX230DCCXXX730
CCXL240DCCXL740
CCL250DCCL750
CCLX260DCCLX760
CCLXX270DCCLXX770
CCLXXX280DCCLXXX780
CCXC290DCCXC790
CCC300DCCC800
CCCX310DCCCX810
CCCXX320DCCCXX820
CCCXXX330DCCCXXX830
CCCXL340DCCCXL840
CCCL350DCCCL850
CCCLX360DCCCLX860
CCCLXX370DCCCLXX870
CCCLXXX380DCCCLXXX880
CCCXC390DCCCXC890
CD400CM900
CDX410CMX910
CDXX420CMXX920
CDXXX430CMXXX930
CDXL440CMXL940
CDL450CML950
CDLX460CMLX960
CDLXX470CMLXX970
CDLXXX480CMLXXX980
CDXC490CMXC990
D500M1000

The following is the conversion from Arabic numbers to Roman numerals for 10 to 1000 by 10:

ArabicRomanArabicRoman
10X510DX
20XX520DXX
30XXX530DXXX
40XL540DXL
50L550DL
60LX560DLX
70LXX570DLXX
80LXXX580DLXXX
90XC590DXC
100C600DC
110CX610DCX
120CXX620DCXX
130CXXX630DCXXX
140CXL640DCXL
150CL650DCL
160CLX660DCLX
170CLXX670DCLXX
180CLXXX680DCLXXX
190CXC690DCXC
200CC700DCC
210CCX710DCCX
220CCXX720DCCXX
230CCXXX730DCCXXX
240CCXL740DCCXL
250CCL750DCCL
260CCLX760DCCLX
270CCLXX770DCCLXX
280CCLXXX780DCCLXXX
290CCXC790DCCXC
300CCC800DCCC
310CCCX810DCCCX
320CCCXX820DCCCXX
330CCCXXX830DCCCXXX
340CCCXL840DCCCXL
350CCCL850DCCCL
360CCCLX860DCCCLX
370CCCLXX870DCCCLXX
380CCCLXXX880DCCCLXXX
390CCCXC890DCCCXC
400CD900CM
410CDX910CMX
420CDXX920CMXX
430CDXXX930CMXXX
440CDXL940CMXL
450CDL950CML
460CDLX960CMLX
470CDLXX970CMLXX
480CDLXXX980CMLXXX
490CDXC990CMXC
500D1000M

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