79 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. 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 LXXIX to represent 79, here L is 50, XX is 20, 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 a smaller number is placed after a larger number, then it is the addition method. For example, LXX → L + X + X → 50 + 10 + 10 = 70

Rule 2: Repetition Method

To write certain numbers, some Roman Numerals can be repeated up to three times. For example, 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 larger number. This is called the 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 LL for 100; instead, we use C, and 8 is written as VIII, not IIIIIIII.

Let’s now learn how to write 79 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 79 in Roman numerals using the expansion method.

To write 79 in Roman Numerals, follow these steps:

Step 1: The number is broken down based on the place value. Place values include ones, tens, hundreds, etc.

For 79, we write it as 50 + 20 + 9.

Step 2: Converting the number into Roman Numerals

50 in Roman Numerals — L
20 in Roman Numerals — XX
9 in Roman Numerals — IX

Step 3: Combine them into Roman Numerals. 

Therefore, 79 in Roman Numerals is L (50) + XX (20) + IX (9) = LXXIX

When writing a number into Roman Numerals, we group the number. 

To write 79 in Roman Numeral, we group 79 as 50 + 20 + 9.

50 in Roman Numerals — L
20 in Roman Numerals — XX
9 in Roman Numerals — IX

So, 79 is written as LXXIX 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 79:

• Addition rule: The addition method is used when a large number is followed by a smaller numeral, here the values are added. For example, LXXIX = L + XX + IX = 50 + 20 + 9 = 79

• Grouping method: Here, the given numbers are grouped based on their place value, and then we convert each group into its Roman numeral. For example, 79 = 50 + 20 + 9 = LXXIX

• 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 smaller numeral precedes a larger numeral. For example, IX = X - I = 10 - 1 = 9

• Place value: In Roman Numerals, the place value system helps to break down numbers into tens, hundreds, and thousands. For example, 79 can be broken down into 50 + 20 + 9.