900 in Roman Numerals

900 in Roman numerals is written as CM. Roman numerals use letters from the Latin alphabet to represent numbers. In this system, 900 is expressed using the subtraction principle, where 1000 (M) minus 100 (C) equals CM. Here, we will explain how to write 900 in Roman numerals, understand the basic rules, and look at solved examples for better learning.

 

Table of Contents

• How to Write 900 in Roman Numerals?
• Basic Rules to Write Roman Numerals
• Roman Numerals Related to the Number 900
• Conclusion

 

How to Write 900 in Roman Numerals?

To represent 900 in Roman numerals, we break the number using the subtraction rule:

• 1000 in Roman numerals = M
• 100 in Roman numerals = C

Now,
900 = 1000 - 100
900 = M - C
900 = CM

Thus, the Roman numeral for 900 is CM.

 

Basic Rules to Write Roman Numerals

• A smaller value before a larger one is subtracted.
  Example: CM = 1000 - 100 = 900.

• A smaller value after a larger one is added.
  Example: XI = 10 + 1 = 11.

• Symbols V (5), L (50), and D (500) are never repeated.

• A symbol can be repeated at most three times. Example: XXX = 30.

Using these rules, students can easily understand and write Roman numerals like 900.

 

Roman Numerals Related to the Number 900

 

Solved Examples on 900 in Roman Numerals

Example 1: Write 1000 - 100 in Roman numerals.

• 1000 = M, 100 = C

• 1000 - 100 = 900 = CM
  
  

Example 2: Express 9 × 100 in Roman numerals.

• 9 × 100 = 900

• In Roman numerals, 900 = CM
  
  

Example 3: Write the difference between M and C in Roman numerals.

• M - C = CM

• So, 900 = CM
  
  

Conclusion

The Roman numeral for 900 is CM. It is written using the subtraction rule, where C (100) is placed before M (1000). By practicing these rules, students can quickly write and understand Roman numerals such as 900 (CM), 950 (CML), and 1000 (M). 

Learn more about Roman numerals like 900 (CM), 99 (XCIX), and others with interactive lessons and solved examples at Orchids The International School.