# IV Roman Numerals | What Is Iv In Roman Numerals?

What Is IV In Roman Numerals? This is a pressing question that we are going to be addressing in this article. In the subsequent sections, we will be x-raying all the basic rudiments in the Roman numerals like how to convert Roman numerals to Arabic numbers, and the basic rules that guide the conversion among others. Keep scrolling through the article to get the right guide that you desire.

The Roman numerals IV is the representation of the number **4**. But if you don’t know how it was obtained or how to convert Roman numerals to Hindu Arabic numbers, well! No worries because this write-up on **What Is IV In Roman Numerals** will be of immeasurable help to you since it contains the simplified procedures that will help you to get the proper information on Roman numerals.

Roman numerals have been in existence for over 1800 years and their importance cannot be overemphasized, since it is needed in astronomy to represent moons and in chemistry to depict groups of the periodic table among other functions. Because of its importance, it has become an integral part of both elementary and high school syllables where it serves as the basis for understanding mathematical concepts.

### What Are Roman Numerals?

Roman numerals as the name implies can be traced back to the Ancient Roman Empire. The Roman numerals numbering system has been used by most Europeans for over 1800 years. This simply means that the Roman numbering system is older than the present Hindu-Arabic system of numbering which is predominantly used today.

Roman numerals are a subtractive and additive method where letters are commonly used to represent certain numbers in the numbering system. It involves the combination of the different English alphabets to represent a specific number (s)

Primarily, the Roman numerals numbering system is based on addition though sometimes it may also use the principle of subtraction. In most cases, the numerals can be added together to represent a large number. Whichever way, Roman numerals have come to stay and we will continue to use them in our daily activities.

## Importance Of Roman Numerals

From the foregoing, we can see that Roman numerals are needed in our daily activities whether directly or indirectly, but for the avoidance of doubt, I am going to enumerate some of the importance of Roman numerals in this section. The importance is listed below:

- Astronomers use Roman numerals to designate moons
- In chemistry, Roman numerals are used to represent groups of the periodic table
- It is also used in the names of popes, monarchs, ships, etc
- Roman numerals are usually seen in building cornerstones, titles, and movie credits.

## IV Roman Numerals

As I have stated earlier, the Roman numerals IV is the representation of the number **4. **This is obtained following one of the Roman numerals rules which state that if the smaller symbol appears before a greater symbol, it should be subtracted.

The illustration is given below;

IV = V – I

Where V = 5 and I = 1

By substitution, we will have

IV = 5 – 1 = 4. As simple as that and you are good to go.

Rules For Converting Roman Numerals

All the known Roman numerals consist of a set of seven symbols. These combinations follow four vital principles. Hence, you must Know and adhere to these four key rules when converting Roman numerals.

Hence, this section is designed to guide you on what the rules are, and how it works with their application attached to enable you to use them without making mistakes.

- First Rule

This rule states that when a smaller symbol is after a great symbol, it is added.

The examples can be seen below;

- XVII = 10 + 5 + 2= 17
- LVIII = 50 + 5 = 58

- Second Rule

This rule says that when a smaller symbol appears before a greater symbol, it should be subtracted

Some of the examples are outlined below

- IX = 10 – 1 = 9
- XXL= 50 – 10 – 10 = 30
- CCM = 1000 – 100 – 100 = 800

- Third Rule

This rule states that the same symbol cannot be repeated more than three times in a row.

The examples can be seen below

- XXX = 10 + 10 + 10 = 30, hence 40 is not XXXX instead it is XL.
- CCC = 100 + 100 + 100 = 300, but 400 is not CCCC. Instead, 400 is a CD, etc.

- Fourth Rule

This states that if a symbol comes after itself, it is added.

The examples are below

- CCC = 100 + 100 + 100 = 300
- CCLV = 100 + 100 + 50 + 5 = 255

How To Convert IV Roman Numerals To Arabic Form?

In this section, we shall be taking a look at how to convert IV Roman numerals to Arabic form. There are generally two methods that are used to convert Roman numerals to Arabic numbers and vice versa, the two methods are elaborated below:

- First Method

In this first method, we have to break the Roman numerals into single letters, then write the numerical value of each letter and after that, you can subtract or add them.

The illustration is below

IV= V – I = 5 – 1 = 4.

- Second Method

This second method involves grouping the Roman numerals for either subtraction or addition.

The illustration is given below

IV = IV = 4. And you are good to go, isn’t that simple?

## Is IV 4 In Roman?

Yes, IV is in Roman. IV is the representation of the number 4.

## Why Is 4 IV And Not IIII?

According to Ancient Roman tradition, it was learned that the name of Roman’s strong deity, which was known as Jupiter was written as IVPPITER in Latin. Hence, the conflicting idea of writing 4 as IV and IIII were promoted. Nevertheless, up to date, both are still being used in some instances, IIII is used in clock calibration to represent 4 though it is outdated, hence IV is widely accepted.

### Why Do Clock Faces Have IIII Instead Of IV?

Though there is no special reason behind that, some argue that clocks look more symmetrical that way. Also, it was learned that the Latin schoolers observed that the ancient Romans themselves used IIII instead of IV in their time.

Related – XXIV Roman Numerals

Also Read – XVI Roman Numerals

Read More – XXVIII Roman Numerals

### Why Do Watches Put IIII Instead Of IV?

Though there is no special reason behind that, some argue that clocks look more symmetrical that way. Also, it was learned that the Latin schoolers observed that the ancient Romans themselves used IIII instead of IV in their time.

It was also gathered that a renowned clockmaker who created a watch for King Louis XIV, the then king of France, and the king rejected the clock on the basis that the clock was calibrated with IV instead of IIII in place of 4 and the King ordered the clockmaker to change it to IIII.

### Conclusion

The Roman numerals IV is the representation of the number 4. Though in some instances, IIII may be used to replace 4, especially in the faces of clocks or wristwatches. Nevertheless, IV is widely recognized as the Roman numerals equivalent of 4. So don’t be confused if you see IIII in some cases. Thanks for your time.