Roman Numerals to Arabic Numbers 1 to 100

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.

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

VI: where V is 5 and I is 1, V is larger and in front, so add the 2 numbers together 5+1 = 6
IL: where L is 50 and I is 1, I is smaller and in front, so minus the 2 numbers together 50-1 = 49
where the letters are the same, add together: III = 1 + 1 + 1 = 3

Convert Rules:

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

Number	Thousands	Hundreds	Tens	Ones
1	M	C	X	I
2	MM	CC	XX	II
3	MMM	CCC	XXX	III
4		CD	XL	IV
5		D	L	V
6		DC	LX	VI
7		DCC	LXX	VII
8		DCCC	LXXX	VIII
9		CM	XC	IX

The following is the conversion from Roman numerals to Arabic numbers for 1 to 100:

Roman	Arabic	Roman	Arabic
I	1	LI	51
II	2	LII	52
III	3	LIII	53
IV	4	LIV	54
V	5	LV	55
VI	6	LVI	56
VII	7	LVII	57
VIII	8	LVIII	58
IX	9	LIX	59
X	10	LX	60
XI	11	LXI	61
XII	12	LXII	62
XIII	13	LXIII	63
XIV	14	LXIV	64
XV	15	LXV	65
XVI	16	LXVI	66
XVII	17	LXVII	67
XVIII	18	LXVIII	68
XIX	19	LXIX	69
XX	20	LXX	70
XXI	21	LXXI	71
XXII	22	LXXII	72
XXIII	23	LXXIII	73
XXIV	24	LXXIV	74
XXV	25	LXXV	75
XXVI	26	LXXVI	76
XXVII	27	LXXVII	77
XXVIII	28	LXXVIII	78
XXIX	29	LXXIX	79
XXX	30	LXXX	80
XXXI	31	LXXXI	81
XXXII	32	LXXXII	82
XXXIII	33	LXXXIII	83
XXXIV	34	LXXXIV	84
XXXV	35	LXXXV	85
XXXVI	36	LXXXVI	86
XXXVII	37	LXXXVII	87
XXXVIII	38	LXXXVIII	88
XXXIX	39	LXXXIX	89
XL	40	XC	90
XLI	41	XCI	91
XLII	42	XCII	92
XLIII	43	XCIII	93
XLIV	44	XCIV	94
XLV	45	XCV	95
XLVI	46	XCVI	96
XLVII	47	XCVII	97
XLVIII	48	XCVIII	98
XLIX	49	XCIX	99
L	50	C	100

The following is the conversion from Arabic numbers to Roman numerals for 1 to 100:

Arabic	Roman	Arabic	Roman
1	I	51	LI
2	II	52	LII
3	III	53	LIII
4	IV	54	LIV
5	V	55	LV
6	VI	56	LVI
7	VII	57	LVII
8	VIII	58	LVIII
9	IX	59	LIX
10	X	60	LX
11	XI	61	LXI
12	XII	62	LXII
13	XIII	63	LXIII
14	XIV	64	LXIV
15	XV	65	LXV
16	XVI	66	LXVI
17	XVII	67	LXVII
18	XVIII	68	LXVIII
19	XIX	69	LXIX
20	XX	70	LXX
21	XXI	71	LXXI
22	XXII	72	LXXII
23	XXIII	73	LXXIII
24	XXIV	74	LXXIV
25	XXV	75	LXXV
26	XXVI	76	LXXVI
27	XXVII	77	LXXVII
28	XXVIII	78	LXXVIII
29	XXIX	79	LXXIX
30	XXX	80	LXXX
31	XXXI	81	LXXXI
32	XXXII	82	LXXXII
33	XXXIII	83	LXXXIII
34	XXXIV	84	LXXXIV
35	XXXV	85	LXXXV
36	XXXVI	86	LXXXVI
37	XXXVII	87	LXXXVII
38	XXXVIII	88	LXXXVIII
39	XXXIX	89	LXXXIX
40	XL	90	XC
41	XLI	91	XCI
42	XLII	92	XCII
43	XLIII	93	XCIII
44	XLIV	94	XCIV
45	XLV	95	XCV
46	XLVI	96	XCVI
47	XLVII	97	XCVII
48	XLVIII	98	XCVIII
49	XLIX	99	XCIX
50	L	100	C

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