Roman Numeral [ Roman Numbers 1 to 100 ]

Roman numerals are a special kind of numeral system that originated in ancient Rome. These numbers have remained in Europe until the Late Middle Ages. Alphabet letters are used in this system to represent roman numerals. Before understanding the roman numbers, first, see what roman alphabets are? Because roman alphabets denote roman numbers.

There are only 23 alphabets in the roman system. J, U and W are not treated as roman letters from 26 English alphabets. There are as follows A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, V, X, Y and Z.

Also Read: Numbers in Words in English

Few important roam numbers denoted by roman letters are I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000.

Now find the list of roman numbers from 1-100

Now let’s see what the rules involved in writing the above roman numbers are.

• When a number symbol appears after a greater number symbol, it will be added. For Example- VII = V + I + I = 5 + 1 +1 = 7.

• When a number symbol appears before a greater number symbol, it will be subtracted. For Example- IV = V – I = 5 – 1= 4.

• When a number symbol appears after a greater number symbol, it will be subtracted. For Example- XXV = X + X + V = 10 + 10 + 5 = 25.

• When a number symbol appears before a greater number symbol, it will be subtracted. For Example- XXXIX = X + X + X + X – I = 10 + 10 + 10 + 10 – 1 = 39.

To make it more simple, break the number into Ones, Tens, Hundreds, and Thousands, and write it down.

Also Read: Girolamo Cardano- Man Behind Complex Numbers.

Convert 1985 to Roman Numerals

Break 1984 into 1000, 900, 80, 5 and then do conversion

1000 = M

900 = CM

90 = XC

5 = V

1000 + 900 + 80 + 5 = 1985, so 1985 = MCMXCV

Convert 2020 to Roman Numerals

Break 2020 into 1000, 1000, 10, 10 and then do conversion

1000 = M

1000 = M

10 = X

10 = X

1000 + 1000 + 10 + 10 = 2020, so 2020 = MMXX

Convert 1562 to Roman Numerals

Break 1562 into 1000, 500, 60, 2 and then do conversion

1000 = M

500 = D

60 = LX

2 = II

1000 + 500 + 60 + 2 = 1562, so 1562 = MDLXII

Convert 2658 to Roman Numerals

Break 2658 into 1000, 1000, 600, 50, 8 and then do conversion

1000 = M

1000 = M

600 = DC

50 = L

8 = VIII

1000 + 1000 + 600 + 50 + 8 = 2658, so 2658 = MMDCLVIII

Also Read: How many zeroes in a Million, Billion, Trillion, Nonillion, Quadrillion, Sextillion, Googol

Now see the roman numbers from 100 -1000

Rules to Convert Numbers to Roman Numerals

The three primary rules for reading and writing Roman numerals:

1. Any letter can be repeated maximum for three times, for example, CCC= 300, XX= 20, and so on.
2. If one or more letters are placed after another letter with greater value, then add that amount.

XII = 12 (10 + 2 = 12)

DCCC = 800 (500 + 100 + 100 + 100 = 800)

Example of additive Rule

3. If a letter is placed before another letter of greater value, subtract that amount.

XC= 90 (100 – 10 = 90)

CM = 900 ( 1000 – 100 = 900 )

Example of Subtractive Rule 

More Examples:

123    CXXIII

189    CLXXXIX

256    CCLVI

294    CCXCIV

333    CCCXXXIII

369    CCCLXIX

452    CDLII

492    CDXCII

543    DXLIII

588    DLXXXVIII

654    DCLIV

691    DCXCI

710    DCCX

744    DCCXLIV

888    DCCCLXXXVIII

873    DCCCLXXIII

926    CMXXVI

985    CMLXXXV