Roman Numbers

Lesson Progress
0% Complete

There are 7 basic symbols to write any roman numeral.

Roman numeral I V X L C D M
Hindu-Arabic 1 5 10 50 100 500 1000

Rules

1.Repetition of a Roman numeral means addition. 

Ex-

\text{II}=1+1=2,\ \text{III}=1+1+1=3,\ \text{XX}=10+10=20.

2. A smaller numeral written to the right of a larger numeral is always added to the larger numeral.

Ex-

\text{VI}=5+1=6,\ \text{VII}=5+1+1=7.

3. A smaller numeral written to the left of a larger numeral is always subtracted from the larger numeral.

Ex-

\text{IV}=5-1=4,\ \text{IV}=50-10=40.

4. When a smaller number is placed between two larger numerals, it is always subtracted from the larger number immediately following it.

Ex-

\text{XIV}=10+(5-1)=14,\ \text{XIX}=10+(10-1)=19.

 

Scroll to Top