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XXV and XXXIX Roman Numerals: Definition, Conversion, Solved Examples and More

Roman Numerals

Roman numerals, as the name implies, get their origin from ancient Rome. It was widely used not only in Rome but also throughout Europe. It spread quickly over Europe, but its popularity declined after the Roman Empire was no longer in charge. However, roman numerals are still used in a variety of contexts today.

Let’s discuss two commonly used roman numerals “XXV and XXXIX Roman Numerals” in detail with their definition, conversion, and many examples.

XXV Roman Numerals

XXV Roman Numerals Conversion into Numbers

Roman Numerals are not represented by numerals as they are generally represented by alphabets such as X, XI… and so on. Some alphabets represent a huge number, such as ‘M,’ which stands for ‘thousand.’ Let’s see how we can convert them to numbers by following the steps below:

  • To begin, we must recognise that roman numerals are a mixture of one or more alphabets, thus we must add the value of one alphabet to the value reflected by the alphabet/alphabets. For example, ‘I’ stands for 1 (one), IV stands for 4 (four), and X stands for 10 (Ten).
  • Identify the alphabets, their values, and the sequence in which they are placed, for example, in XXV Roman Numerals, X represents ten (10), followed by X again, which implies ten (10) and finally V, which means five (5), therefore we will add all the numbers, which in this case is 10 + 10 + 5 = 25. It is also known as the Addition Method since all of the alphabets are added together to achieve the desired number. When a larger alphabet follows a smaller one, they are joined together to get the desired result.

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  • Another method that is used in some cases is to subtract the alphabets placed before and after it. For example, IV denotes 4 (four), it has two letters I and V denoting I as one and V as five, so the one following the next letter is subtracted to get the answer, i.e. IV is obtained by subtracting V from I, or 5 – 1 = 4. This is sometimes referred to as the subtraction method. It should be noted that if a smaller letter follows a larger alphabet, the latter is deducted to achieve the desired result. 

Another thing to keep in mind is that the same number cannot be added or written more than three times in a row, for example, XXX is 10+10+10= 30. However, XXXX does not equal 40 and is therefore invalid.

XXXIX Roman Numerals

Roman numerals XXXIX can be expressed as numbers by adding the roman numerals that have been changed, 



⇒ XXX + IX 

⇒ 30 + 9 

⇒ 39

The accurate translation of XXXIX Roman Numerals results from the higher roman numerals coming before the lower ones. 

How to Write XXXIX Roman Numerals?

Any of the two methods shown below can be used to calculate the numerical value of XXXIX Roman Numerals:

  • We divide the roman numerals into single letters, write the numerical value of each letter, and add/subtract them in this method.


⇒ X + X + X + (X – I) 

⇒ 10 + 10 + 10 + (10 – 1) 

⇒ 39

  • Using this method, we can add or remove roman numeral groupings such as,


⇒ XXX + IX 

⇒30 + 9 


As a result, XXXIX roman numerals have a numerical value of 39.

Few Applications of Roman Numerals

The following are a few applications of Roman numeral applications.

  • Roman numerals are used on analog watches and clocks.
  • They are used in copyright for a variety of purposes, including television shows, videos, and the release date of a film, among others.
  • This word is used in the first few pages of a novel.
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