How to Write IV Roman Numerals?

How to Write IV Roman Numerals?

How to Write IV Roman Numerals?: The number 4 is written as IV in Roman numerals. This is because Roman numerals use a subtractive combination. When a smaller numeral precedes a larger one, you subtract the smaller numeral.

Here, I (1) comes before V (5), indicating 5 – 1, which equals 4.

Example:

IV = V – I
IV = 5 – 1
IV = 4

Here, we directly consider a group of Roman Numerals for addition/subtraction.

IV = 4

Hence, the numerical value of IV Roman Numerals is 4.

Steps to Write IV Roman Numerals

  • Identify the Larger Numeral: In this case, V (5) is the larger numeral.
  • Place the Smaller Numeral Before the Larger One: Place I (1) before V (5).
  • Understand the Subtraction Rule: Since I is before V, subtract 1 from 5.
  • Combine the Numerals: IV represents 4.

Rules for Writing Roman Numerals

Subtractive Notation

Subtractive notation is an important element of Roman numerals and applies to other numbers as well. Here are a few examples:

  • IV = 4 (5 – 1)
  • IX = 9 (10 – 1)
  • XL = 40 (50 – 10)
  • XC = 90 (100 – 10)
  • CD = 400 (500 – 100)
  • CM = 900 (1000 – 100)

Additive Notation

When a smaller number follows a larger number, you add the values. Here are some examples:

  • VI = 6 (5 + 1)
  • VII = 7 (5 + 2)
  • VIII = 8 (5 + 3)
  • XII = 12 (10 + 2)
  • XVI = 16 (10 + 5 + 1)

Combining Symbols

To write numbers, we combine these basic symbols according to the rules of additive and subtractive notation. Here are some more examples:

  • XV = 15 (10 + 5)
  • XX = 20 (10 + 10)
  • XXV = 25 (10 + 10 + 5)
  • XXX = 30 (10 + 10 + 10)
  • XL = 40 (50 – 10)
  • L = 50
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