CML in Roman Numerals

Ancient Romans discovered that counting fingers could get very complicated after 10. So to overcome the complexity, the Roman numeric system was developed. This was widely used throughout Europe as a standard writing system until the late Middle Ages.

Seven symbols are used to represent numbers in the Roman numeric system — I, V, X, L, C, D, and M. The numerals are made up of different combinations of these symbols. CML in Roman numerals can be written in number form by using the subtraction and addition methods, i.e. CML = 900 + 40 + 10 = 950.

Let us learn more about the Roman numeral CML, how we write them, the mistakes we usually make, and ways to avoid these mistakes.

When writing Roman numerals, there are a few rules that we need to follow based on the Roman numerals we are trying to write. In this section, we will learn about the rules when writing Roman numerals and how to represent them.

Rule 1: Addition Method:

When a larger symbol is followed by a smaller symbol, we add the numerals to each other. For example, in VI, we have 5 + 1 = 6.

Rule 2: Repetition Method:

A symbol that is repeated three times in continuation increases the value of the numeral. For example, CCC = 300.

Rule 3: Subtraction Method:

We use the subtraction method when a smaller symbol precedes a larger symbol. For example, XL = 40 (which is 50 – 10).

Rule 4: Limitation Rule:

Symbols cannot be repeated more than three times, and some symbols, such as V, L, and D cannot be repeated. For example, 1000 is represented as M and not DDD.

Let us learn about how to write CML in Roman numerals. There are two methods that we can use to write Roman numerals:

• By Expansion Method
• By Grouping Method

The breaking down of Roman numerals into parts and then converting them into numerals is what we call the expansion method. The expansion method is the breaking down of Roman numerals into numerical form and adding them to get the final number.

Step 1: Break the Roman numerals into parts.

Step 2: Now write each of the Roman numerals with its numerical digit in the place value.

Step 3: Add the numerals together.

For CML,

Step 1: First, we break the Roman numerals. CML = CM + L

Step 2: Write the Roman Numerals for each part The Roman Numeral CM is 900 The Roman Numeral L is 50

Step 3: Combine all the numbers CM + L = 900 + 50 = 950. Therefore, the Roman Numeral CML is 950.

Using subtraction and addition rules, we will apply the grouping method. This means we break the Roman numerals into smaller groups, which makes it easier to work with. This method groups the Roman numerals logically, and then we write the numbers for each group.

Step 1: Take the largest number and write the number for that Roman numeral.

Step 2: Write the Roman numeral using the subtraction and addition rules.

Example: Let’s take the Roman numeral CML.

Step 1: The larger Roman numerals are what we will begin with. Once split, the Roman numerals we get are CM and L. The numeral for CM is 900.

Step 2: Now we need to either add or subtract the smaller number, depending on its place. Here we add L to CM and we will get CML. The Roman numeral L is 50. Therefore, the numeral of CML is 950.

We follow a pattern when it comes to writing Roman numerals. In this section, we will write some numbers related to the Roman numeral CML:

• Subtraction Method: A method used when a smaller numeral is placed before a larger numeral to indicate subtraction. For example, IV is 4 (5 - 1).

• Addition Method: A method used when numerals are added together, generally when smaller numerals follow larger ones. For example, VI is 6 (5 + 1).

• Limitation Rule: The rule that certain symbols cannot be repeated more than three times, and some cannot be repeated at all, like V, L, and D.

• Place Value: The value of a digit depending on its position in a numeral. For example, in the numeral 950, the 9 represents hundreds.

• Prime Number: A number that has only two factors, 1 and itself. For example, 7 is a prime number.