84 in Roman Numerals

Royal titles, such as Henry I, Henry II, and so on, often use Roman numerals. Have you noticed the names and wondered what these symbols (I and II) represented? Those are the Roman numerals. Earlier, people used fingers, sticks, bones, etc., to count. As life became more complex, a standard form was required. Ancient Romans used the Roman numeral system to count. I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) are the symbols we use to count.

In Roman numerals, we use LXXXIV to represent 84, where L is 50, XXX is 30, and IV is 4. Let’s learn more about Roman numerals and how we write them.

There are certain basic rules to write a number in Roman numerals. In this section, let’s discuss some basic rules that need to be remembered when writing a number in Roman numerals.

Rule 1: Addition Method

The addition method is used when the smaller number is placed after the larger number. For example, LXXXIV → L + XXX + IV → 50 + 30 + 4 = 84.

Rule 2: Repetition Method

To write a large number, certain Roman numerals can be repeated up to three times. For example, XXX → 30.

Rule 3: Subtraction Method

If a small number precedes a large number in Roman numerals, we subtract the smaller number from the larger number. For example, IV → V - I → 5 - 1 = 4.

Rule 4: Limitation Rule

The symbols cannot be repeated more than three times, and some symbols like V, L, and D cannot be repeated. For example, we won't write LLLL for 200; instead, we use CC.
 

Let’s now learn how to write 84 in Roman numerals. Follow these methods to write the number in Roman numerals.

• By Expansion Method  
• By Grouping Method
   

In the expansion method, based on the place value, the number is broken down. In this section, we will learn how to write 84 in Roman numerals using the expansion method.

To write 84 in Roman numerals, follow the steps:

Step 1: Break the number based on the place value. Place values include ones, tens, hundreds, etc.  
For 84, we write it as 50 + 30 + 4.

Step 2: Convert each number into Roman numerals:  

50 in Roman numerals - L  
30 in Roman numerals - XXX  
4 in Roman numerals - IV 

Step 3: Combine the Roman numerals together:  
Therefore, 84 in Roman numerals is L (50) + XXX (30) + IV (4) = LXXXIV.
 

When writing a large number into Roman numerals, we group the number.  

To write 84 in Roman numerals, we group 84 as 50 + 30 + 4:

 
50 in Roman numerals - L  
30 in Roman numerals - XXX  
4 in Roman numerals - IV  

So, 84 is written as LXXXIV in Roman numerals.
 

Roman numerals follow a certain pattern, making them look similar. In this section, we will learn some numbers related to the Roman numeral 84.

LXXX = 80  
LXXXI = 81  
LXXXII = 82  
LXXXIII = 83  
LXXXIV = 84  
LXXXV = 85  
LXXXVI = 86  
LXXXVII = 87  
LXXXVIII = 88  
LXXXIX = 89  

• Addition rule: The addition method is used when a large number is followed by a smaller numeral, and the values are added. For example, LXXXIV = L + XXX + IV = 50 + 30 + 4 = 84.

• Grouping method: Here, the given numbers are grouped based on their place value and then converted into Roman numerals. For example, 84 = 50 + 30 + 4 = LXXXIV.

• Repetition rule: Certain symbols (I, X, C, M) in the Roman numeric system can be repeated only up to three times. For example, XXX = 30 (X is repeated three times to represent the number 30).

• Subtraction rule: The subtraction method is used when a small numeral precedes a larger one, and the smaller numeral is subtracted from the larger one. For example, IV = 5 - 1 = 4.

• Limitation rule: Roman numerals like V, L, and D cannot be repeated, and no numeral can be repeated more than three times consecutively.