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 Numeral Roman Numeral
1 I
5 V
10 X
50 L
100 C
500 D
1000 M

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:

Number Roman
Numeral
Calculation
0 not
defined
1 I 1
2 II 1+1
3 III 1+1+1
4 IV 5-1
5 V 5
6 VI 5+1
7 VII 5+1+1
8 VIII 5+1+1+1
9 IX 10-1
10 X 10
11 XI 10+1
12 XII 10+1+1
13 XIII 10+1+1+1
14 XIV 10-1+5
15 XV 10+5
16 XVI 10+5+1
17 XVII 10+5+1+1
18 XVIII 10+5+1+1+1
19 XIX 10-1+10
20 XX 10+10
21 XXI 10+10+1
22 XXII 10+10+1+1
23 XXIII 10+10+1+1+1
24 XXIV 10+10-1+5
25 XXV 10+10+5
26 XXVI 10+10+5+1
27 XXVII 10+10+5+1+1
28 XXVIII 10+10+5+1+1+1
29 XXIX 10+10-1+10
30 XXX 10+10+10
31 XXXI 10+10+10+1
32 XXXII 10+10+10+1+1
33 XXXIII 10+10+10+1+1+1
34 XXXIV 10+10+10-1+5
35 XXXV 10+10+10+5
36 XXXVI 10+10+10+5+1
37 XXXVII 10+10+10+5+1+1
38 XXXVIII 10+10+10+5+1+1+1
39 XXXIX 10+10+10-1+10
40 XL 50-10
41 XLI 50-10+1
42 XLII 50-10+1+1
43 XLIII 50-10+1+1+1
44 XLIV 50-10-1+5
45 XLV 50-10+5
46 XLVI 50-10+5+1
47 XLVII 50-10+5+5+1
48 XLVIII 50-10+5+1+1+1
49 XLIX 50-10-1+10
50 L 50
51 LI 50+1
52 LII 50+1+1
53 LIII 50+1+1+1
54 LIV 50-1+5
55 LV 50+5
56 LVI 50+5+1
57 LVII 50+5+1+1
58 LVIII 50+5+1+1+1
59 LIX 50-1+10
60 LX 50+10
61 LXI 50+10+1
62 LXII 50+10+1+1
63 LXIII 50+10+1+1+1
64 LXIV 50+10-1+5
65 LXV 50+10+5
66 LXVI 50+10+5+1
67 LXVII 50+10+5+1+1
68 LXVIII 50+10+5+1+1+1
69 LXIX 50+10-1+10
70 LXX 50+10+10
71 LXXI 50+10+10+1
72 LXXII 50+10+10+1+1
73 LXXIII 50+10+10+1+1+1
74 LXXIV 50+10+10-1+5
75 LXXV 50+10+10+5
76 LXXVI 50+10+10+5+1
77 LXXVII 50+10+10+5+1+1
78 LXXVIII 50+10+10+5+1+1+1
79 LXXIX 50+10+10-1+5
80 LXXX 50+10+10+10
81 LXXXI 50+10+10+10+1
82 LXXXII 50+10+10+10+1+1
83 LXXXIII 50+10+10+10+1+1+1
84 LXXXIV 50+10+10+10-1+5
85 LXXXV 50+10+10+10+5
86 LXXXVI 50+10+10+10+5+1
87 LXXXVII 50+10+10+10+5+1+1
88 LXXXVIII 50+10+10+10+5+1+1+1
89 LXXXIX 50+10+10+10-1+10
90 XC 100-10
91 XCI 100-10+1
92 XCII 100-10+1+1
93 XCIII 100-10+1+1+1
94 XCIV 100-10-1+5
95 XCV 100-10+5
96 XCVI 100-10+5+1
97 XCVII 100-10+5+1+1
98 XCVIII 100-10+5+1+1+1
99 XCIX 100-10-1+10
100 C 100

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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