Last updated on May 26th, 2025
Roman numerals are a system of numerical notation used in ancient Rome, employing combinations of letters from the Latin alphabet: I, V, X, L, C, D, and M. These numerals are prevalent in various contexts like royal titles, book chapters, sequences, and more. Here we will discuss Roman numerals, their rules, and examples.
Have you ever noticed the use of Roman numerals in contexts like movie sequels or book chapters and wondered what they represent? These are the Roman numerals, a system used by the ancient Romans to write numbers.
The symbols include I (1), V (5), X (10), L (50), C (100), D (500), and M (1000). In Roman numerals, 907 is represented as CMVII. In this representation, CM is 900 (1000 - 100) and VII is 7 (5 + 2). Let's learn more about Roman numerals and how we write them.
There are specific basic rules for writing numbers in Roman numerals. In this section, we will discuss some fundamental rules that must be remembered when writing numbers in Roman numerals.
The addition method is applied when a smaller number follows a larger number. For example, VII → V + II → 5 + 2 = 7
Certain Roman numerals can be repeated up to three times to form other numbers. For example, III → 3.
If a smaller number precedes a larger number, the smaller number is subtracted from the larger one. For example, CM → M - C → 1000 - 100 = 900
Roman numeral symbols cannot be repeated more than three times, and certain symbols like V, L, and D cannot be repeated. For example, instead of writing IIII for 4, we write IV.
Let's learn how to write 907 in Roman numerals using various methods:
Using the expansion method, a number is broken down based on place value. In this section, we will learn how to write 907 in Roman numerals using this method. To write 907 in Roman numerals, follow these steps:
Step 1: Break the number based on place value: hundreds, tens, and ones. For 907, we write it as 900 + 7
Step 2: Convert each part into Roman numerals.
Step 3: Combine the Roman numerals. Therefore, 907 in Roman numerals is CM (900) + VII (7) = CMVII
When writing large numbers in Roman numerals, we group the components. To write 907 in Roman numerals, we group 907 as 900 + 7
So, 907 is written as CMVII in Roman numerals.
Students often make mistakes when writing numbers in Roman numerals. To master Roman numerals, we can learn from a few common mistakes and how to avoid them.
Convert the sum of DCCC and CVII into Roman numerals.
The sum of DCCC and CVII in Roman numerals is CMLVII.
DCCC is 800 and CVII is 107.
Adding these together gives 800 + 107 = 907.
In Roman numerals, 907 is written as CMLVII.
A historian found that a document was created in the year DCCCXC and it took XVII years to complete. What is the final year of completion in Roman numerals?
The final year of completion is CMVII.
The document creation started in the year DCCCXC (890) and took XVII (17) years to complete.
Adding these gives 890 + 17 = 907.
In Roman numerals, 907 is CMVII.
A museum has a collection of CM paintings. They acquire another VII paintings. What is the total number of paintings in Roman numerals?
The total number of paintings is CMVII.
The museum initially has CM (900) paintings.
They acquire VII (7) more, resulting in 900 + 7 = 907 paintings.
In Roman numerals, 907 is written as CMVII.
If a marathon runner's bib number is DCCCXC and they gain XVII places, what is their new bib number in Roman numerals?
The new bib number is CMVII.
The runner's original bib number is DCCCXC (890).
Gaining XVII (17) places changes their number to 890 + 17 = 907.
In Roman numerals, 907 is CMVII.
Express the year of an ancient event that occurred 100 years after the year DCCCXCVII in Roman numerals.
The year is CMVII.
The event occurred 100 years after DCCCXCVII (897).
Adding 100 years results in 897 + 10 = 907.
In Roman numerals, this year is CMVII.
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.