Roman Numerals 100 to 1000

Roman Numerals use symbols to represent number systems. Ancient Romans used the letters I, V, X, L, C, D, and M to represent numbers. The absence of zero at that time and the lack of other mathematical operations made Roman Numerals obsolete in modern times. For example, we write 500 as D.

Roman numbers are used today in clocks, chapters in books, classrooms, etc. The following chart helps us understand the numerals better.

List of Roman Numerals 100 to 1000

The list of Roman Numerals provides an organized way to understand how those letters combine to represent a number. The given list starts from C (100) to M (1000). Learning these numerals helps deepen your understanding of the numerical system.

Roman Numerals from 100 to 200

Roman Numerals from 201 to 300

Roman Numerals from 301 to 400

Roman Numerals from 401 to 500

Roman Numerals from 501 to 600

Roman Numerals from 601 to 700

Roman Numerals from 701 to 800

Roman Numerals from 801 to 900

Roman Numerals from 901 to 1000

Roman Numerals rely on specific symbols, and there are rules of addition and subtraction. The basic symbols in Roman Numerals are:

I = 1

V = 5

X = 10

L = 50

C = 100

D = 500

M = 1000

Using the above symbols, we can combine Roman Numerals for numbers easily. There are two basic methods of writing Roman Numerals:

By Expansion Method:

Through the expansion method, we break down numbers into hundreds, tens, and ones, then convert them into numerals.

Step 1: Break the numbers into hundreds, tens, and ones.

Step 2: Write Roman Numerals for each part.

Step 3: Combine all parts to get the numerals.

Example: For the number 999.

Step 1: Break the numbers 900 + 90 + 9 = 999

Step 2: Add Roman Numerals for each part

The Roman Numeral of 900 is CM.

The Roman Numeral of 90 is XC.

The Roman Numeral of 9 is IX.

Step 3: Combine all parts 900 (CM) + 90 (XC) + 9 (IX) = CMXCIX.

Therefore, the Roman Numeral of 999 is CMXCIX.

By Grouping Method:

Grouping method combines Roman Numeral symbols directly using addition and subtraction rules.

Step 1: Start writing numerals for the largest number.

Step 2: Smaller numbers are either added or subtracted.

Following the rule of addition and subtraction is mandatory.

Addition: smaller numeral after the larger numeral.

Subtraction: smaller numeral before the large numeral.

Example: For the number 112.

Step 1: Start with the larger numbers.

While splitting, we will get 100 and 12.

The Roman Numeral of 100 is C.

Step 2: Add or subtract the smaller number. If we add 12 to 100, it becomes 112.

The Roman Numeral of 12 is XII.

Therefore, the Roman Numeral of 112 is CXII.

Roman Numerals follow rules to ensure numbers are written correctly. Here are some main rules:

• Rule 1: Addition Method
  
   
• Rule 2: Repetition Method
  
   
• Rule 3: Subtraction Method
  
   
• Rule 4: Limitation Rule

Rule 1: Addition Method:

In Roman Numerals, if the smaller numeral comes after the larger numeral, add their values.

Example: If the given number is CLXII, C refers to 100, L to 50, and XII to 12. So, the smaller numeral is after the larger numeral, so we add 100 + 50 + 12 to get 162.

Rule 2: Repetition Method:

Roman Numerals can be repeated up to three times to increase value. The numbers cannot be repeated more than three times. Symbols like I, X, C, and M can be repeated, but V, L, and D cannot be.

Example: CCC = 100 + 100 + 100 = 300. Repeating C four times is not allowed.

Rule 3: Subtraction Method:

If the smaller numeral comes before the larger numeral, subtract the smaller numeral from the larger numeral to get the number. Three rules in subtraction are: I can be subtracted from V and X. X can be subtracted from L and C. C can be subtracted from D and M.

Example: In the number CD. Here, D is the largest numeral, and C is the smallest numeral. Since the smaller numeral is before the larger numeral, subtract to get the number. D (500) - C (100) = CD (400).

Rule 4: Limitation Rule:

Roman Numerals have several limitations: A numeral cannot be repeated more than three times. For example, III (3) cannot be repeated more than 3 times; instead, we use IV for writing 4. Subtraction cannot be done with non-pair numbers.

For example, XL here L (50) - X (10) gives XL, which is applicable, but IC, C (100) - I (1) is not applicable. Only one subtraction is allowed in one numeral.

For example, XC (90), C (100) - X (10) is applicable to get 90, but XXC is not applicable to get the number 80.

Roman Numerals are fun to learn and easy to write when you know the following tips and tricks:

• Memorize basic symbols like I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) to write and read other numerals easily.
  
   
• Always break large numerals into smaller parts to make them easier to read and write.
  
   
• Remember the repetition rule; a number should not be added more than three times.
  
   
• Practice smaller numerals and gradually move to bigger values.
  
   
• We use numerals in clocks, classrooms, etc., and try to read from a numeral clock to make numerals easy to learn.

• Breaking Numbers: It is the process of splitting a larger number into smaller parts. For example, for multiplying 350, we can divide it as 300 + 50.

• Repetition: Using the same symbols more than once. For example, CCC.

• Numerical System: The numbers, used in ancient Rome, used Latin letters rather than digits. For example, C, D, M, etc.

• Grouping Method: A method of combining symbols directly to form numbers using addition and subtraction rules.

• Expansion Method: A method of breaking down numbers into smaller parts and converting them into Roman Numerals.