489 in Roman Numerals

The royal titles, such as Henry I, Henry II, and so on. Have you noticed the names and wondered what these symbols (I and II) represented? Those are the Roman numerals. Earlier people used to count using fingers, sticks, bones, etc., to count earlier. When life became complex, a standard form was required to count.

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 CDLXXXIX to represent 489. Here, C is 100, D is 500, L is 50, XXX is 30, and IX is 9.

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, then it is the addition method. For example, LX → L + X → 50 + 10 = 60

Rule 2: Repetition Method

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

Rule 3: Subtraction Method

If a small number is followed by a large number in Roman numerals, we subtract the smaller number from the large number. It is a subtraction method. For example, IX → X - I → 10 - 1 = 9

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 VV for 10; instead, we use X, and for 40, we write XL, not XXXX.

Let’s now learn how to write 489 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 489 in Roman numerals using the expansion method. To write 489 in Roman numerals, follow the steps:

Step 1: Break the number based on place value, such as ones, tens, hundreds, etc. For 489, we write it as 400 + 80 + 9.

Step 2: Converting the number into Roman numerals:

• 400 in Roman Numerals - CD
   
• 80 in Roman Numerals - LXXX
   
• 9 in Roman Numerals - IX

Step 3: Combine the Roman numerals together. Therefore, 489 in Roman Numerals is CD (400) + LXXX (80) + IX (9) = CDLXXXIX

When writing a large number in Roman numerals, we group the number. To write 489 in Roman numerals, we group 489 as 400 + 80 + 9.

• 400 in Roman Numerals - CD
   
• 80 in Roman Numerals - LXXX
   
• 9 in Roman Numerals - IX

So, 489 is written as CDLXXXIX 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 489. 

• Addition Method: Used when a larger numeral is followed by a smaller numeral, here the values are added. For example, CDLXXXIX = CD + LXXX + IX = 400 + 80 + 9 = 489.
   
• Expansion Method: Break down the number based on place value and convert each part into its Roman numeral. For example, 489 = 400 + 80 + 9 = CDLXXXIX
   
• Subtraction Method: Use when a smaller numeral precedes a larger numeral; subtract the smaller from the larger. For example, IX = X - I = 10 - 1 = 9.
   
• Grouping Method: Numbers are grouped based on their place value and converted into Roman numerals. For example, 489 = 400 + 80 + 9 = CDLXXXIX
   
• Limitation Rule: Some symbols, like V, L, and D, cannot be repeated, and no symbol can be repeated more than three times.