# Roman Numerals:

## 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, II-2, XX-20, and XX-30).
• 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¯