23 in roman numerals

In roman numerals, to express various numbers, we use specific to letters. 23 in roman numerals can be written as XXIII
 

There are certain rules to write a number in roman number. Let’s discuss some of the basic rules which need to be followed

Rule 1: Addition method: There are certain letters used in roman numerals. So, a large value is followed by a small value to express the value. 

For example, when we write 23 in roman numerals.

X (20) +X (20) + I (1) + I (1) +I (1) = XXIII (23)

Rule 2: Repetition method: When a roman numeral is repeated, it means we need to add it to find the value. The maximum a number can repeat is three times.

For example, when we write 23 in roman numerals.

X (20) +X (20) + I (1) + I (1) +I (1) = XXIII (23)

Here, X is repeated twice. So, X + X = 20

And I is repeated thrice, so I + I +I = 3

So we add it all together, it's 23 (XXIII).

Rule 3: subtraction method: Subtraction method is only used for certain combination. We use it in the combination where the small numeral is followed by a large numeral, here we subtract the smaller from the larger numeral.

For example, 4 is written as IV 

V(5) - I(1) = lV(4)

Rule 4: Limitation rule: In roman numerals, the numerals cannot be repeated more than three times, and some are not repeated at all. The numerals like V, L, and D are not repeated at all. So, addition and subtraction methods are used to get the value. 

For example, to write 23 in roman numerals, we use addition.

 X + X + I + I + I = XXIII

To write a number in roman numerals, we use certain methods. They are

• By expansion method 
• By Grouping method 
   

In expansion method the numeral is split based on the place value, that is ones, tens, hundreds, etc. individual place is converted into roman numerals separately. 

First, let’s break down 23 based on place value 

In ten’s place we have 2 and 3 in one's place that is 20 + 3

Next, changing the place value of numerals into Roman numerals.

That's it 20 + 3 can be converted into the following

20 = X +X = XX
 3 = I + I + I = III 

Next, we need to combine 

So 23 can be written as XXIII in roman numerals.
 

Grouping method is used based on the basic rules in roman numbers. Here we break down the larger numerals into smaller based on the roman numerals.

To write XXIII in numerals using grouping methods, first let's break down XXIII.

That is, XXIII will be breakdown into X + X + I + I + I

Now, let’s convert the roman numerals into numerals

X (10) + X (10) = XX(20)

I + I + I = III(3)

So, XXIII is 23.

Roman numerals is the numbering system where the specific letters are used to represent the value. I, V, X, L, D and M are the letters used in roman numerals. When we write 23 in roman numerals, it is XXIII. When we analyze the roman numeral XXIII it is closely related to XXI, XXII, XXIV, XXV, and so on. By using addition and subtraction method, the desired values can be formed.

The numbers related to roman numeral XXIII are

• XX: 20
• XX1: 21
• XXII: 22
• XXIII: 23
• XXIV: 24
• XXV: 25
• XXVI: 26
• XXVII:27
• XXVIII:28
• XXIX:29
   

• Roman numeral: Roman numerals are the numerals where we use specific letters to express the value

• Addition method: When a large numeral is followed by a small numeral, we add the values in roman number.

• Subtraction method: when the small number is followed by the larger, in this case to find the value we need to substrate the large value with the smaller value