901 in Roman Numerals

The royal titles, such as Henry I, Henry II, and so on. Have you noticed the names and wondered what these symbols (I and II) represented? Those are the Roman Numerals.

Earlier people used to count using fingers, sticks, bones, etc. to count earlier. When life became complex, a standard form was required to count. Ancient Romans used the Roman Numeral system to count. 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 CMI to represent 901, where C is 100, M is 1000, and I is 1. 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, VI → V + I → 5 + 1 = 6

Rule 2: Repetition Method

To write a large number, certain Roman Numerals can be repeated up to three times. For example, XXX → 30.

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, IV → V - I → 5 - 1 = 4

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. Similarly, 8 is written as VIII, not IIIIIIII.

Let’s now learn how to write 901 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 the place value, the number is broken down. In this section, we will learn how to write 901 in Roman numerals using the expansion method. To write 901 in Roman Numerals, follow the steps:

Step 1: The number is broken based on the place value, such as ones, tens, hundreds, etc. For 901, we write it as 1000 - 100 + 1

Step 2: Converting the number into Roman Numerals:

• 1000 in Roman Numeral - M
   
• 100 in Roman Numeral - C
   
• 1 in Roman Numeral -I

Step 3: Combining these Roman Numerals together: Therefore, 901 in Roman Numeral is M (1000) - C (100) + I (1) = CMI

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

To write 901 in Roman Numerals, we group 901 as 1000 - 100 + 1.

• 1000 in Roman Numeral - M
   
• 100 in Roman Numeral - C
   
• 1 in Roman Numeral - I

So, 901 is written as CMI 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 901. 

• Subtraction rule: The subtraction method is used when a smaller numeral precedes a larger one, resulting in subtraction. For example, CM = M - C = 1000 - 100 = 900.
   
• Addition rule: The addition method is used when a large numeral is followed by a smaller one, resulting in addition. For example, VI = V + I = 5 + 1 = 6.
   
• Grouping method: Numbers are grouped based on their place value before converting each group into Roman numerals. For example, 901 = 1000 - 100 + 1 = CMI.
   
• 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).
   
• Limitation rule: Some symbols like V, L, and D cannot be repeated. For instance, we use L for 50, not XXXXX.