Roman Numerals to Number
Roman Numerals:
Definition:
A unique type of number notation that was once employed by the Romans is known as Roman Numerals. Letters are used to represent specific base numbers and arbitrary numbers in the number system using the Roman numeral, which is an additive and subtractive system.
Roman numerals are represented by a separate set of symbols, some of which are letters from the English alphabet. For instance, the roman numeral for 5 is V. It can be used to name anything, including classes like Class I, Class II, and Class X.
A unique type of number notation that was once employed by the Romans is known as Roman Numerals. Letters are used to represent specific base numbers and arbitrary numbers in the number system using the Roman numeral, which is an additive and subtractive system.
How do Roman numerals work?
The ancient number system known as Roman numerals is still prevalent worldwide. The fixed positive numbers are represented by alphabets in roman numerals. I, II, III, IV, V, VI, VII, VIII, IX, and X are roman numerals that stand for the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 respectively.
The roman numbers XI for 11, XII for 12, XII for 13,... to XX for 20 come after 10. The table below lists the most popular roman numerals currently in use to represent the fundamental numbers.
I V X L C D M \s1 5 10 50 100 500 1000
Chart for Roman Numerals (1 to 1000):
Roman numerals from 1 to 1000, including 1, 2, 3,..., 10, 11, 20, 30, 50, 100, 500, and 1000, are shown in the table below. We can quickly write roman numbers from 1 to 1000 using the chart.
Roman digits from 1 to 100:
Number  Roman
Numeral 
Number  Roman
Numeral 
Number  Roman
Numeral 
Number  Roman
Numeral 
Number  Roman
Numeral 
1  I  21  XXI  41  XLI  61  LXI  81  LXXXI 
2  II  22  XXII  42  XLII  62  LXII  82  LXXXII 
3  III  23  XXIII  43  XLIII  63  LXIII  83  LXXXIII 
4  IV  24  XXIV  44  XLIV  64  LXIV  84  LXXXIV 
5  V  25  XXV  45  XLV  65  LXV  85  LXXXV 
6  VI  26  XXVI  46  XLVI  66  LXVI  86  LXXXVI 
7  VII  27  XXVII  47  XLVII  67  LXVII  87  LXXXVII 
8  VIII  28  XXVIII  48  XLVIII  68  LXVIII  88  LXXXVIII 
9  IX  29  XXIX  49  XLIX  69  LXIX  89  LXXXIX 
10  X  30  XXX  50  L  70  LXX  90  XC 
11  XI  31  XXXI  51  LI  71  LXXI  91  XCI 
12  XII  32  XXXII  52  LII  72  LXXII  92  XCII 
13  XIII  33  XXXIII  53  LIII  73  LXXIII  93  XCIII 
14  XIV  34  XXXIV  54  LIV  74  LXXIV  94  XCIV 
15  XV  35  XXXV  55  LV  75  LXXV  95  XCV 
16  XVI  36  XXXVI  56  LVI  76  LXXVI  96  XCVI 
17  XVII  37  XXXVII  57  LVII  77  LXXVII  97  XCVII 
18  XVIII  38  XXXVIII  58  LVIII  78  LXXVIII  98  XCVIII 
19  XIX  39  XXXIX  59  LIX  79  LXXIX  99  XCIX 
20  XX  40  XL  60  LX  80  LXXX  100 
C

Roman Letters:
Although not all English alphabets are roman alphabets, the roman letters are. Out of the 26 English alphabets, there are 23 roman alphabets, and J, U, and W are not included. A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, V, X, Y, and Z are the letters in the Roman alphabet. Roman symbols are another name for these roman letters.
For instance, MMXIX is how the year 2019 is written.
Roman numeral Writing Guidelines:
 When writing a number in roman numerals, there are specific criteria that must be adhered to. Please review the following rules.
 As many times as the symbol is repeated, its value is added to itself. (For instance, II2, XX20, and XX30).

Only three times can a symbol be repeated; for example, XXX = 30, CC = 200, etc.
The symbols V, L, and D are unique.
 When a symbol with a lower value follows one with a higher value, their values will be added. As an illustration, VI = V + I = 5 + 1 = 6.
 When a symbol with a lower value precedes one with a higher value, the lower value symbol will be removed. As an illustration, IX = X  I = 10  1 = 9.
 V, L, and D are never deducted since they are not put before a sign of a higher value.
 Only the symbols V and X can be subtracted from, and only the symbols L, M, and C can be subtracted from, the sign I.
Roman Numeral Conversion to Numbers :
Rule no 1: If one or more symbols are positioned after a letter with a higher value, add that sum.
VII = 7 (5 + 2 = 7)
LXXX = 80 (50 + 10 + 10 + 10 = 80)
MCCC = 1300 (1000+100 + 100 + 100 = 1300)
Rule no 2:Subtract the value of the symbol if it comes before a letter with a higher value.
CM = 900 (1000  100 = 900)
IX = 9 (10  1 = 9)
XC = 90 (100  10 = 90)
Rule no 3:In the case of roman numerals, 1000 is replaced by a bar.
5000  10,000  50,000  100,000  500,000  1,000000 
V¯

X¯

L¯

C¯

D¯

M¯
