Roman numbers are used on different occasions in life. But sometimes it is a little bit confusing when it comes to writing a huge roman number.
No worry. In this guide, you will be learning how to form a big number in the roman number system. This is also counted as one of the greatest skills when you know number systems more than one.
This journey of learning roman numbers is adventurous and full of fun. Let’s get into the learning process of forming or converting a normal number into a roman version.
What Do You Need To Excel In Roman Numbers?
- Roman Digits or Symbolic representations of numerals
- Rules of Roman Number formation
- Formation of simple numbers using roman symbols
- Formation of complex numbers using roman symbols
Understanding The Roman Digits
A digit is the smaller unit of any number system. While you are going to learn a new number scheme, you need to have a basic understanding of its digits.
Roman numbers don’t have its own number architecture but it uses English Alphabets to represent any numerical value. Once you understand these symbols, you just need to learn roman number formation to excel in this number system.
| Roman Representation | Number |
|---|---|
| I | 1 |
| V | 5 |
| X | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1,000 |
Roman Numbers From 1 to 10
Observe the Table given below carefully to understand the basics of Roman numbers system.
| Number | Roman Numeral |
|---|---|
| 1 | I |
| 2 | II |
| 3 | III |
| 4 | IV |
| 5 | V |
| 6 | VI |
| 7 | VII |
| 8 | VIII |
| 9 | IX |
| 10 | X |
Observations
1️⃣ A Symbol can only be repeated a maximum of three times.
For Example- You can not write “IIII” For number 4 or “VIIII” For number 9.
2️⃣ When a symbol appears to the Right side of another symbol, it’s value will be added.
For Example- When you write “III“, It’s Value will be 1+1+1=3 [I+I+I=III] And When You write “VII”, It’s Value will be 5+1+1=7 [V+I+I=VII]
3️⃣ When a symbol appears to the left side of another symbol, it’s value will be subtracted.
For Example- When you write “IV”, Its value will be 5-1=4 [V-I=IV] And when you write “IX”, Its value will be 10-1=9 [X-I=IX]
Some Important Notes
Some fair questions may definitely have arisen in your brain. Let’s find out solutions of these questions.
Question 1. Can I write “IIV” for number 3 or “IIIX” for number 7?
Answer 1- Any symbol can only be subtracted once. So, you can not write “IIV” for number 3 or “IIIX” for number 7.
Question 2. Can I write “VV” for number 10?
Answer 2- Symbols that contain 5 (Like V=5, L=50, D=500) can not be repeated. So, you can’t write “VV” for the number 10.
Question 3. Is value of “VX” 5?
Answer 3- Symbols that contain 5 (Like V=5, L=50, D=500) can not be subtracted in any other symbol. So, The given number formation is not valid.
Roman Numbers From 1 to 100
Observations and QnA’s are discussed about numbers from 1 to 10 will help you understand the roman numbers from 1 to 100. So, make sure you have read those.
| Number | Roman Number | Number | Roman Number |
|---|---|---|---|
| 1 | I | 51 | LI |
| 2 | II | 52 | LII |
| 3 | III | 53 | LIII |
| 4 | IV | 54 | LIV |
| 5 | V | 55 | LV |
| 6 | VI | 56 | LVI |
| 7 | VII | 57 | LVII |
| 8 | VIII | 58 | LVIII |
| 9 | IX | 59 | LIX |
| 10 | X | 60 | LX |
| 11 | XI | 61 | LXI |
| 12 | XII | 62 | LXII |
| 13 | XIII | 63 | LXIII |
| 14 | XIV | 64 | LXIV |
| 15 | XV | 65 | LXV |
| 16 | XVI | 66 | LXVI |
| 17 | XVII | 67 | LXVII |
| 18 | XVIII | 68 | LXVIII |
| 19 | XIX | 69 | LXIX |
| 20 | XX | 70 | LXX |
| 21 | XXI | 71 | LXXI |
| 22 | XXII | 72 | LXXII |
| 23 | XXIII | 73 | LXXIII |
| 24 | XXIV | 74 | LXXIV |
| 25 | XXV | 75 | LXXV |
| 26 | XXVI | 76 | LXXVI |
| 27 | XXVII | 77 | LXXVII |
| 28 | XXVIII | 78 | LXXVIII |
| 29 | XXIX | 79 | LXXIX |
| 30 | XXX | 80 | LXXX |
| 31 | XXXI | 81 | LXXXI |
| 32 | XXXII | 82 | LXXXII |
| 33 | XXXIII | 83 | LXXXIII |
| 34 | XXXIV | 84 | LXXXIV |
| 35 | XXXV | 85 | LXXXV |
| 36 | XXXVI | 86 | LXXXVI |
| 37 | XXXVII | 87 | LXXXVII |
| 38 | XXXVIII | 88 | LXXXVIII |
| 39 | XXXIX | 89 | LXXXIX |
| 40 | XL | 90 | XC |
| 41 | XLI | 91 | XCI |
| 42 | XLII | 92 | XCII |
| 43 | XLIII | 93 | XCIII |
| 44 | XLIV | 94 | XCIV |
| 45 | XLV | 95 | XCV |
| 46 | XLVI | 96 | XCVI |
| 47 | XLVII | 97 | XCVII |
| 48 | XLVIII | 98 | XCVIII |
| 49 | XLIX | 99 | XCIX |
| 50 | L | 100 | C |
Some Other Important Rules
1️⃣ The symbol “I” Can only be subtracted from “V” and “X”.
2️⃣ The symbol “X” Can only be subtracted from “L” and “C”.
Roman Numbers From 100 to 1000
| Number | Roman Numeral |
|---|---|
| 100 | C |
| 200 | CC |
| 300 | CCC |
| 400 | CD |
| 500 | D |
| 600 | DC |
| 700 | DCC |
| 800 | DCCC |
| 900 | CM |
| 1000 | M |
Observations and Rules
1️⃣ The symbol “C” Can only be subtracted from “D” and “M”.
Roman Numbers Counting Chart From 1 to 1 Billion
You have now familiar with roman numbers from 1 to 1000. But what about bigger numbers. You need to learn a little bit about the bigger Roman Numbers. Observe the given chart below to understand the bigger roman number formation.
Observations
1️⃣ When we place one bar ¯ over a symbol (except “I”), it multiplies the value by 1000.
2️⃣ When we place Two bars ¯ ¯ over a symbol (except “I”), it multiplies the value by 1000*1000.
Conversion of Simple Numbers into Roman
Break down the number in terms of 1, 5, 10, 50, 100, 500, 1000 and write roman symbols accordingly. Below are given some examples to help you understand.
| 1 | 5 | 10 | 50 | 100 | 500 | 1000 |
| I | V | X | L | C | D | M |
- 89=50+10+10+10+9(10-1)=LXXXIX
- 230=100+100+10+10+10=CCXXX
- 2020=1000+1000+10+10=MMXX
- 2021=1000+1000+10+10+1=MMXXI
- 2022=1000+1000+10+10+1+1=MMXXII
- 1550=1000+500+50=MDL
- 1234=1000+100+100+10+10+10+4(5-1)=MCCXXXIV
- 999=900(1000-100)+90(100-10)+9(10-1)=CMXCIX
- 3214=1000+1000+1000+100+100+10+4(5-1)=MMMCCXIV
Complete list of Rules
Symbols
I – 1
V – 5
X – 10
L – 50
C – 100
D – 500
M – 1000
Rules
- A Symbol can only be repeated a maximum of three times.
- When a symbol appears on the Right side of another symbol, it’s value will be added.
- When a symbol appears to the left side of another symbol, it’s value will be subtracted.
- The symbol “I” Can only be subtracted from “V” and “X”.
- The symbol “X” Can only be subtracted from “L” and “C”.
- The symbol “C” Can only be subtracted from “D” and “M”
- Any symbol can only be subtracted once i.e. written once on the left side.
- Symbols that contain 5 (Like V=5, L=50, D=500) can not be repeated.
- Symbols that contain 5 (Like V=5, L=50, D=500) can not be subtracted in any other symbol.
- When we place one bar ¯ over a symbol (except “I”), it multiplies the value by 1000.
- When we place Two bars ¯ ¯ over a symbol (except “I”), it multiplies the value by 1000*1000.
Also learn Hindi Numbers counting in easy way.
Faq’s – Roman Number Counting
-
How to write 9 in Roman numerals?
Convert the number into the terms of 1 and 10 i.e. I and X.
Then Subtract 1 from 10 i.e. X-I =IX
Hence, 9=IX -
How to write 50 in Roman numerals?
Number 50 is represented by “L” in Romans. Hence, 50=L
-
2020 & 2021 in roman numeral?
2020= 1000+1000+10+10=MMXX
2021= 1000+1000+10+10+1=MMXXI -
100 in roman numeral?
Number 100 is represented by “c” in Romans. Hence, 100=C
-
What is “M” represents in roman numbers?
The symbol “M” represents “1000” in Roman numerals. Hence, M=1000
-
49 in Roman numbers?
Break down the number into the terms of 1, 10, 50 i.e. I, X, L.
Since 49=40(50-10)+9(10-1)=XLIX