120 in Roman Numerals

Royal titles, such as Henry I, Henry II, and so on, use Roman numerals. Have you noticed the names and wondered what these symbols (I and II) represented? Those are Roman numerals. Earlier, people used fingers, sticks, bones, etc., to count. When life became complex, a standard form was required for counting. Ancient Romans used the Roman numeral system. I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) are the symbols we use to count.

In Roman numerals, we use CXX to represent 120, where C is 100, X is 10, and X is another 10. Let’s learn more about Roman numerals and how we write them.
 

There are certain basic rules to write a number in Roman numerals. In this section, let’s discuss some basic rules that need to be remembered when writing a number in Roman numerals.

Rule 1: Addition Method

The addition method is used when the smaller number is placed after the larger number. For example, CXX → C + X + X → 100 + 10 + 10 = 120.

Rule 2: Repetition Method

To write a large number, there are certain Roman numerals that can be repeated up to three times. XXX → 30 (X is repeated three times).

Rule 3: Subtraction Method

If a small number is followed by a large number in Roman numerals, we subtract the smaller number from the larger number. For example, XC → C - X → 100 - 10 = 90.

Rule 4: Limitation Rule

The symbols cannot be repeated more than three times, and some symbols like V, L, and D cannot be repeated. For example, we won't write VV for 10; instead, we use X, and 8 is written as VIII, not IIIIIIII.
 

Let’s now learn how to write 120 in Roman numerals. Follow these methods to write the number in Roman numerals.

By Expansion Method  
By Grouping Method  
 

In the expansion method, based on place value, the number is broken down. In this section, we will learn how to write 120 in Roman numerals using the expansion method.

To write 120 in Roman numerals, follow these steps:

Step 1: Break the number based on place value, that is, ones, tens, hundreds, etc.

For 120, we write it as 100 + 10 + 10.

Step 2: Converting the number into Roman numerals

100 in Roman numerals — C  
10 in Roman numerals — X  

Step 3: Combine the Roman numerals together.  

Therefore, 120 in Roman numerals is C (100) + X (10) + X (10) = CXX.
 

When writing a large number into Roman numerals, we group the number.

 
To write 120 in Roman numerals, we group it as 100 + 10 + 10.  

100 in Roman numerals — C  
10 in Roman numerals — X  

So, 120 is written as CXX in Roman numerals.
 

Roman numerals follow a certain pattern, making them look similar. In this section, we will learn some numbers related to the Roman numeral 120.

• Addition rule: The addition method is used when a large number is followed by a smaller numeral; here, the values are added. For example, CXX = C + X + X = 100 + 10 + 10 = 120.
   
• Grouping method: Here, the given numbers are grouped based on their place value, and then we convert each group into its Roman numerals. For example, 120 = 100 + 10 + 10 = CXX.
   
• Repetition rule: Certain symbols (I, X, C, M) in the Roman numeric system can be repeated only up to three times. For example, XXX = 30 (X is repeated three times to represent the number 30).
   
• Subtraction method: In the Roman numeral system, when a smaller numeral precedes a larger numeral, the smaller value is subtracted from the larger one. For example, XC = 100 - 10 = 90.
   
• Limitation rule: Roman numeral symbols cannot be repeated more than three times, and specific symbols like V, L, and D cannot be repeated at all.