Roman Numerals – Class 4

Roman Numerals – Class 4

Learn reading and writing of Roman numerals from 1 to 100.

Roman Numerals

In the Roman system there is no symbol for zero. Roman numerals for Hindu-Arabic Numeral such as 1, 5, 10, 50, 100, 500 and 1000 are given below:

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

Rules for formation of Roman-numerals is given below:

Rule 1: Repetition of a Roman numeral means addition. The roman digits I, X, C and M are repeated maximum up to three times in succession to form the numbers. V, L and D cannot be repeated.

Examples:

I = 1, II = 1 + 1 = 2, III = 1 + 1 + 1 = 3,

X = 10, XX = 10 + 10 = 20, XXX = 10 + 10 + 10 = 30,

C = 100, CC = 100 + 100 = 200, CCC = 100 + 100 + 100 = 300

M = 1000, MM = 1000 + 1000 = 2000, MMM = 1000 + 1000 + 1000 = 3000.

 

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

Examples:

VI = 5 + 1 = 6, VII = 5 + 1 + 1 = 7, VIII = 5 + 1 + 1 + 1 = 8

XI = 10 + 1 = 11, XII = 10 + 1 + 1 = 12, XIII = 10 + 1 + 1 + 1 = 13

XV = 10 + 5 = 15, XVI = 10 + 5 + 1 = 16, XVII = 10 + 5 + 1 + 1 = 17

LX = 50 + 10 = 60, LXX = 50 + 10 + 10 = 70, LXV = 50 + 10 + 5 = 65

 

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

Examples:

IV = 5 – 1 = 4, IX = 10 – 1 = 9, XL = 50 – 10 = 40, XIV = 10 + (5 – 1) = 14

XL = 50 – 10 = 40, XC = 100 – 10 = 90, XIX = 10 + (10 – 1) = 19

Please Note: V, L and D are never subtracted. V is never written to the left of X.

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

Examples:

XXIX = 10 + 10 + (10 – 1) = 29,

XLV = (50 – 10) + 5 = 45,

CLIX = 100 + 50 + (10 – 1) = 159.

Roman numerals chart from 1 to 100:

NumberRoman
Numeral
Calculation
0not
defined
1I1
2II1+1
3III1+1+1
4IV5-1
5V5
6VI5+1
7VII5+1+1
8VIII5+1+1+1
9IX10-1
10X10
11XI10+1
12XII10+1+1
13XIII10+1+1+1
14XIV10-1+5
15XV10+5
16XVI10+5+1
17XVII10+5+1+1
18XVIII10+5+1+1+1
19XIX10-1+10
20XX10+10
21XXI10+10+1
22XXII10+10+1+1
23XXIII10+10+1+1+1
24XXIV10+10-1+5
25XXV10+10+5
26XXVI10+10+5+1
27XXVII10+10+5+1+1
28XXVIII10+10+5+1+1+1
29XXIX10+10-1+10
30XXX10+10+10
31XXXI10+10+10+1
32XXXII10+10+10+1+1
33XXXIII10+10+10+1+1+1
34XXXIV10+10+10-1+5
35XXXV10+10+10+5
36XXXVI10+10+10+5+1
37XXXVII10+10+10+5+1+1
38XXXVIII10+10+10+5+1+1+1
39XXXIX10+10+10-1+10
40XL50-10
41XLI50-10+1
42XLII50-10+1+1
43XLIII50-10+1+1+1
44XLIV50-10-1+5
45XLV50-10+5
46XLVI50-10+5+1
47XLVII50-10+5+5+1
48XLVIII50-10+5+1+1+1
49XLIX50-10-1+10
50L50
51LI50+1
52LII50+1+1
53LIII50+1+1+1
54LIV50-1+5
55LV50+5
56LVI50+5+1
57LVII50+5+1+1
58LVIII50+5+1+1+1
59LIX50-1+10
60LX50+10
61LXI50+10+1
62LXII50+10+1+1
63LXIII50+10+1+1+1
64LXIV50+10-1+5
65LXV50+10+5
66LXVI50+10+5+1
67LXVII50+10+5+1+1
68LXVIII50+10+5+1+1+1
69LXIX50+10-1+10
70LXX50+10+10
71LXXI50+10+10+1
72LXXII50+10+10+1+1
73LXXIII50+10+10+1+1+1
74LXXIV50+10+10-1+5
75LXXV50+10+10+5
76LXXVI50+10+10+5+1
77LXXVII50+10+10+5+1+1
78LXXVIII50+10+10+5+1+1+1
79LXXIX50+10+10-1+5
80LXXX50+10+10+10
81LXXXI50+10+10+10+1
82LXXXII50+10+10+10+1+1
83LXXXIII50+10+10+10+1+1+1
84LXXXIV50+10+10+10-1+5
85LXXXV50+10+10+10+5
86LXXXVI50+10+10+10+5+1
87LXXXVII50+10+10+10+5+1+1
88LXXXVIII50+10+10+10+5+1+1+1
89LXXXIX50+10+10+10-1+10
90XC100-10
91XCI100-10+1
92XCII100-10+1+1
93XCIII100-10+1+1+1
94XCIV100-10-1+5
95XCV100-10+5
96XCVI100-10+5+1
97XCVII100-10+5+1+1
98XCVIII100-10+5+1+1+1
99XCIX100-10-1+10
100C100

For True and False Quiz on the chapter Roman Numerals – Class 4, click the Next button.

True or False Questions

10 True or False questions based on the chapter Roman Numerals for School Students studying in Class 4 are given below. Attempt all the questions. Every questions has two options, True and False. Select the option which you think is correct. After attempting all the questions select the Submit button given at the end. On selecting the Submit button all the correct answer will be highlighted with green colour and all the wrong answer will be highlighted in red colour. Let’s start!!

1. Roman numeral for the number 50 is C.

True
False

 

2. XL = 60

True
False

 

3. XCV = 95

True
False

 

4. Roman numeral for zero is not defined.

True
False

 

5. CC = 200

True
False

 

6. In Roman numeral, a smaller numeral written to the right of a larger numeral is always added to the larger numeral.

True
False

 

7. V, L and D are never subtracted.

True
False

 

8. XLV = 65

True
False

 

9. MM = 1000

True
False

 

10. V is never written to the left of X.

True
False

 

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