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Last updated on March 30th, 2025
Roman numerals are a way of expressing numbers using symbols. The main symbols used are I, V, X, L, C, D, and M. Roman numerals are commonly seen in royal titles, book names, sequences, and more. In this document, we will discuss Roman numerals, their rules, and examples.
You might have seen Roman numerals in various contexts, such as in royal titles like Henry I, Henry II, etc., and wondered what these symbols represented. These are Roman numerals. In ancient times, people used fingers, sticks, bones, etc., to count. As life became more complex, a standard system was needed. Ancient Romans developed the Roman numeral system. The symbols used are: I (1), V (5), X (10), L (50), C (100), D (500), and M (1000).
In Roman numerals, we use DCCX to represent 710. Here, D represents 500, C represents 100, and X represents 10. Let’s learn more about Roman numerals and how they are written.
There are certain basic rules for writing numbers in Roman numerals. In this section, let’s discuss some of these rules.
The addition method is used when a smaller number is placed after a larger number. For example, DCCX → D + C + C + X → 500 + 100 + 100 + 10 = 710.
To write larger numbers, certain Roman numerals can be repeated up to three times. For example, CCC → 300.
If a smaller number precedes a larger number, it is subtracted. For example, IX → X - I → 10 - 1 = 9.
Symbols cannot be repeated more than three times, and some symbols like V, L, and D cannot be repeated. For example, we don't write VV for 10; instead, we use X.
Let’s now learn how to write 710 in Roman numerals. Follow these methods to write the number.
The expansion method involves breaking down the number based on place value. Let's see how to write 710 using this method.
Step 1: Break down the number based on place value: 700 + 10.
Step 2: Convert each part into Roman numerals:
Step 3: Combine the Roman numerals: DCC + X = DCCX
For larger numbers, grouping can be used.
To write 710 in Roman numerals:
So, 710 is written as DCCX in Roman numerals.
A historian discovers a manuscript stating that the Roman Empire lasted DCCX years from its inception until its decline. If the historian also found records indicating the empire lasted CDXC years until reaching its peak, how many years did it last after its peak?
An archaeologist finds DCCX ancient coins in a buried chest and decides to distribute them equally among L friends. How many coins does each friend receive?
A historian notes that a particular Roman road was built to last MM years, and it has already lasted MCCC years. How many more years is the road expected to last?
At a Roman-themed event, a caterer prepares DLXX servings of food. If DXX guests attend, how many extra servings are prepared?
Calculate the Roman numeral for the sum of CCCLXV and CCCXLV.
Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.
: She loves to read number jokes and games.