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134 Learners

Last updated on ** October 1st, 2024**

Roman numerals are an ancient way of writing numbers that stem from tally marks the shepherds and traders used to count, which evolved over time into a structured system that aided the Romans in trade, taxation and military logistics. Though it is not widely used in modern math, they remain an important part of our learning. In this article, we will learn about the Roman numeral VII (7).

VII is the Roman numeral for 7. It is a derivative numeral expression that comes from V+II or 5(V)+2(II).

The Roman numeral shows flexibility to build larger numbers from the smaller numbers. Explained below are the rules for the accurate usage of Roman numerals.

**Addition method:**

The larger values follow the smaller values in Roman numerals and to ascertain the larger numbers, we simply add the smaller values.

For VII;

V = 5

I = 1

I = 1

Therefore, V+I+I= VII (7)

**Repetition method:**

In the case where a particular letter repeats itself, say I(1) in the given case, it is understood that they have to be added together.

**Subtraction method:**

The subtraction method can be used to ascertain the value when a smaller number precedes a larger number. It is indicative that a smaller number is to be subtracted from the large one to get the number you are looking for.

However, the subtraction method doesn't apply to VII (7) in the given case, as the numbers are arranged for addition.

Let us take the case of IV(4) to understand how this works;

V= 5, I=1

By arranging the I(1) before V(5) → 5-1 = 4 — VI.

**Limitation rule:**

The rule for this method states that certain Roman numerals cannot be repeated more than three times to form new values.

In the case of VII, I/1 is repeated twice, however, numbers like V(5) or X (10) cannot be repeated more than once as they are not designed for repetition.

We can write the Roman numeral for 7 using two methods, namely, the Expansion method and Grouping method. The same are explained in detail;

Here, we break down the numbers to parts based on the place values. Each place value is then expressed as a Roman numeral equivalent.

Follow the below steps to ascertain the Roman numeral by using the Expansion method;

Expand the number and break it into its place values.

Convert the chunks of place values into an equivalent Roman numeral.

Combine the acquired characters to get the Roman numeral result.

Example;

74

70 → 50+10+10=L+X+X= LXX

4 → IV

Combining we get,** LXXIV**

The larger Roman numerals are broken into smaller numbers based on the individual Roman numeral symbol.

Follow the below steps to ascertain the Roman numeral by using the Grouping method;

Look for numerals that need to be added together or subtracted, as explained in the Addition and Subtraction rules above.

Break them down into simpler and smaller parts.

Add or subtract the values left.

Example;

XXVI

XX:20 → 10+10=20

V → 5

I → 1

I → 1

Add 20+5+1+1 =27

**Expansion Method:**This method involves breaking down numbers into parts based on place values like thousands, hundreds, tens, or ones.

**Grouping Method:**This method involves breaking down larger Roman numerals into smaller.