143 in Roman Numerals

Royal titles such as Henry I, Henry II, and so on use Roman numerals to denote the order. Roman numerals originated when ancient Romans needed a standard form of counting as life became more complex. The symbols I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) are used in this system.

In Roman numerals, 143 is written as CXLIII: C is 100, XL is 40 (50  10), and III is 3. 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. For example, CXLIII → C + XL + III → 100 + 40 + 3 = 143.

Rule 2: Repetition Method

To represent certain numbers, some Roman numerals can be repeated up to three times. For example, III → 3.

Rule 3: Subtraction Method

If a smaller number precedes a larger number, it is subtracted. For example, XL → L  X → 50  10 = 40.

Rule 4: Limitation Rule

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 CCCC for 400; instead, we use CD.

Let’s now learn how to write 143 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 place value, the number is broken down. Here, we learn how to write 143 in Roman numerals using this method.

To write 143 in Roman numerals, follow these steps:

1. Break the number based on place value: 100 + 40 + 3.

2. Convert the numbers into Roman numerals:

100 in Roman numerals — C

40 in Roman numerals — XL

3 in Roman numerals — III

3. Combine the Roman numerals: Therefore, 143 in Roman numerals is C (100) + XL (40) + III (3) = CXLIII.

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

To write 143 in Roman numerals, we group 143 as 100 + 40 + 3:

100 in Roman numerals — C

40 in Roman numerals — XL

3 in Roman numerals — III

So, 143 is written as CXLIII in Roman numerals.

Roman numerals follow a certain pattern. In this section, we will learn some numbers related to 143 in Roman numerals:

• Addition Rule: Used when a large number is followed by a smaller numeral, and their values are added. For example, CXLIII = C + XL + III = 100 + 40 + 3 = 143.

• Grouping Method: The number is grouped based on place value and then converted into Roman numerals. For example, 143 = 100 + 40 + 3 = CXLIII.

• Repetition Rule: Certain symbols (I, X, C, M) in the Roman numeric system can be repeated only up to three times. For example, III = 3 (I is repeated three times to represent the number 3).

• Subtraction Rule: Applied when a smaller numeral precedes a larger one, and the smaller value is subtracted. For example, XL = 50  10 = 40.

• Limitation Rule: Certain symbols like V, L, and D cannot be repeated. They must be used appropriately to represent numbers.