↑
Class 4
Class 5
CBSE
UP Board
Worksheet
30 Solved + 20 Practice
GuidedPath Noida · Primary Maths · Worksheet
Roman Numerals
» I to C «
» I to C «
Reading and writing Roman numerals I, V, X, L, C (1 to 100). Additive and subtractive rules, conversion between Hindu-Arabic and Roman, error spotting, clock and calendar questions. 30 fully solved + 20 practice questions with answer key.
📋 Worksheet Contents:
📌 All solved questions show full step-by-step working. Attempt the practice questions on your own first — then check the answer key at the bottom.
Solved Questions — Starter
Q1 to Q10 · Single symbols & simple additions · I, V, X
Q1
Write the Hindu-Arabic value of: VII Starter
▼
Solution
Additive rule: When a smaller (or equal) symbol follows a larger one, ADD their values.
1
VII = V + I + I
V=5
+
I=1
+
I=1
=
7
✓ VII = 7
Q2
Write the Roman numeral for 9. Starter
▼
Solution
Subtractive rule: When a smaller symbol comes BEFORE a larger one, SUBTRACT it. I before X = IX = 9.
1
9 = 10 − 1 → I before X
I=1
before
X=10
→
10−1 = 9
✓ 9 = IX
Q3
Write the Hindu-Arabic value of: XIV Starter
▼
Solution
1
XIV → X then IV
2
X = 10 · IV = 4 (I before V = 5−1)
X=10
+
IV=4
=
14
✓ XIV = 14
Q4
Write the Roman numeral for 15. Starter
▼
Solution
1
15 = 10 + 5 = X + V
X=10
+
V=5
=
XV
✓ 15 = XV
Q5
Write the Hindu-Arabic value of: XIX Starter
▼
Solution
1
XIX → X + IX
2
X=10 · IX=9 → 10+9=19
X=10
+
IX=9
=
19
✓ XIX = 19
Q6
Write Roman numerals for: (a) 4 (b) 6 (c) 11 Starter
▼
Solution
1
(a) 4 = 5−1 = IV subtractive
2
(b) 6 = 5+1 = VI additive
3
(c) 11 = 10+1 = XI additive
✓ (a) IV (b) VI (c) XI
Q7
Write the Hindu-Arabic value of: XXI Starter
▼
Solution
1
XXI = X + X + I = 10 + 10 + 1
X=10
+
X=10
+
I=1
=
21
✓ XXI = 21
Q8
True or False: IIII is the correct way to write 4. Starter
▼
Solution
Repetition rule: A symbol can be repeated at most 3 times in a row. Never use IIII, XXXX, or CCCC.
1
IIII uses I four times → breaks the rule
2
Correct way: 4 = IV (subtractive)
✓ False — 4 is written as IV, not IIII
Q9
Write Roman numerals for: (a) 20 (b) 30 (c) 40 Starter
▼
Solution
1
(a) 20 = 10+10 = XX
2
(b) 30 = 10+10+10 = XXX
3
(c) 40 = 50−10 = XL (X before L)
✓ (a) XX (b) XXX (c) XL
Q10
Write the Hindu-Arabic value of: XLIV Starter
▼
Solution
1
XLIV → XL + IV
2
XL = 50−10 = 40 · IV = 5−1 = 4
XL=40
+
IV=4
=
44
✓ XLIV = 44
Solved Questions — Core Practice
Q11 to Q22 · L, C · Up to 100 · Conversions both ways
Q11
Write Roman numerals for: (a) 50 (b) 60 (c) 90 Core
▼
Solution
1
(a) 50 = L
2
(b) 60 = 50+10 = LX
3
(c) 90 = 100−10 = XC (X before C)
✓ (a) L (b) LX (c) XC
Q12
Write the Hindu-Arabic value of: LXVIII Core
▼
Solution
1
LXVIII → L + X + V + I + I + I
2
50 + 10 + 5 + 1 + 1 + 1 = 68
L=50
+
X=10
+
V=5
+
I=1
+
I=1
+
I=1
=
68
✓ LXVIII = 68
Q13
Write the Roman numeral for 100. Core
▼
Solution
1
100 is represented by the symbol C (from Latin "Centum")
100
→
C
✓ 100 = C
Q14
Write the Hindu-Arabic value of: XCIX Core
▼
Solution
1
XCIX → XC + IX
2
XC = 100−10 = 90 · IX = 10−1 = 9
XC=90
+
IX=9
=
99
✓ XCIX = 99
Q15
Write Roman numerals for: (a) 49 (b) 74 (c) 89 Core
▼
Solution
1
(a) 49 = 40+9 = XL+IX = XLIX
2
(b) 74 = 50+10+10+4 = L+XX+IV = LXXIV
3
(c) 89 = 50+30+9 = L+XXX+IX = LXXXIX
✓ (a) XLIX (b) LXXIV (c) LXXXIX
Q16
Write Hindu-Arabic values: (a) XXXIX (b) LXXXV (c) XCVI Core
▼
Solution
1
(a) XXXIX = XXX+IX = 30+9 = 39
2
(b) LXXXV = L+XXX+V = 50+30+5 = 85
3
(c) XCVI = XC+V+I = 90+5+1 = 96
✓ (a) 39 (b) 85 (c) 96
Q17
Spot the error: IIX for 8. Write the correct Roman numeral. Core
▼
Solution
Subtractive rule: Only ONE symbol can be placed before a larger symbol for subtraction. IIX is invalid — two symbols cannot be subtracted together.
1
IIX → placing II before X is not allowed
2
Correct: 8 = 5+3 = V+III = VIII
✓ IIX is wrong · Correct = VIII
Q18
Write Roman numerals for: (a) 55 (b) 66 (c) 77 Core
▼
Solution
1
(a) 55 = 50+5 = L+V = LV
2
(b) 66 = 50+10+5+1 = L+X+V+I = LXVI
3
(c) 77 = 50+10+10+5+1+1 = L+XX+V+II = LXXVII
✓ (a) LV (b) LXVI (c) LXXVII
Q19
Write the Hindu-Arabic value of: LXXIX Core
▼
Solution
1
LXXIX → L + XX + IX
2
50 + 20 + 9 = 79
L=50
+
X=10
+
X=10
+
IX=9
=
79
✓ LXXIX = 79
Q20
Which is greater: LXX or LXIX? Core
▼
Solution
1
LXX = 50+10+10 = 70
2
LXIX = 50+10+9 = 69
3
70 > 69 → LXX is greater
✓ LXX (70) > LXIX (69)
Q21
Arrange in ascending order: XXV · XIV · XL · IX Core
▼
Solution
1
Convert all: XXV=25 · XIV=14 · XL=40 · IX=9
2
Ascending: 9 < 14 < 25 < 40
3
In Roman: IX < XIV < XXV < XL
✓ IX, XIV, XXV, XL
Q22
What is XXXV + XIV? Write answer in Roman numerals. Core
▼
Solution
1
XXXV = 35 · XIV = 14
2
35 + 14 = 49
3
49 = 40+9 = XL+IX = XLIX
✓ XXXV + XIV = 35+14 = 49 = XLIX
Solved Questions — Challenge
Q23 to Q30 · Error spotting · Clocks · Reasoning · Board level
Q23
A clock shows Roman numerals. Write the Roman numerals for all 12 hours on a clock face. Challenge
▼
Solution
1 = I
2 = II
3 = III
4 = IV
5 = V
6 = VI
7 = VII
8 = VIII
9 = IX
10 = X
11 = XI
12 = XII
✓ I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII
Q24
Spot all errors and correct them: (a) VX for 5 (b) LC for 50 (c) IIIII for 5 Challenge
▼
Solution
1
(a) VX → V cannot be subtracted from X. Only I can go before V/X. 5 = V VX is invalid
2
(b) LC → L (50) before C (100) would mean 100−50=50, but L cannot be used subtractively. Only I, X, C can subtract. 50 = L LC is invalid
3
(c) IIIII → repeating I five times is not allowed (max 3). 5 = V IIIII is invalid
✓ All three are wrong · (a) V (b) L (c) V
Q25
What is C − XXXV? Write answer in Roman numerals. Challenge
▼
Solution
1
C = 100 · XXXV = 35
2
100 − 35 = 65
3
65 = 50+10+5 = LXV
✓ C − XXXV = 100−35 = 65 = LXV
Q26
Fill the number line with Roman numerals: 45, 46, 47, 48, 49, 50, 51 Challenge
▼
Solution
45XLV
46XLVI
47XLVII
48XLVIII
49XLIX
50L
51LI
Key
Note how 49 = XLIX (XL+IX), then 50 = L, 51 = LI — the system resets cleanly at L
✓ XLV, XLVI, XLVII, XLVIII, XLIX, L, LI
Q27
A book has chapters numbered in Roman numerals. Chapter XIV has 28 pages and chapter XV has 35 pages. How many pages are in these two chapters? Write answer in Roman numerals. Challenge
▼
Solution
1
XIV = 14th chapter · XV = 15th chapter
2
Total pages = 28 + 35 = 63
3
63 = 50+10+3 = L+X+III = LXIII
✓ Total = 63 pages = LXIII
Q28
Arrange in descending order: XLVIII · LXXXIV · XCIX · LV Challenge
▼
Solution
1
Convert: XLVIII=48 · LXXXIV=84 · XCIX=99 · LV=55
2
Descending: 99 > 84 > 55 > 48
3
In Roman: XCIX > LXXXIV > LV > XLVIII
✓ XCIX, LXXXIV, LV, XLVIII
Q29
What Roman numeral comes exactly halfway between XL and LX? Challenge
▼
Solution
1
XL = 40 · LX = 60
2
Halfway = (40 + 60) ÷ 2 = 100 ÷ 2 = 50
3
50 = L
✓ Halfway = 50 = L
Q30
A school has XCVI students in Class 4 and LXXXVII in Class 5. Which class has more students? How many more? Write answer in Roman numerals. Challenge
▼
Solution
1
XCVI = XC+V+I = 90+5+1 = 96
2
LXXXVII = L+XXX+V+II = 50+30+5+2 = 87
3
96 > 87 → Class 4 has more
4
Difference = 96 − 87 = 9 = IX
✓ Class 4 has more students · by 9 = IX students
Practice Questions — Section A
Q1 to Q8 · I, V, X · Straightforward conversions
- 1 Write the Hindu-Arabic value of: VIII
- 2 Write the Roman numeral for 12.
- 3 Write the Hindu-Arabic value of: XVII
- 4 Write Roman numerals for: (a) 4 (b) 9 (c) 16
- 5 True or False: XI = 9
- 6 Write the Hindu-Arabic value of: XXIV
- 7 Write Roman numerals for: (a) 18 (b) 25 (c) 29
- 8 What is wrong with VIIII? Write the correct Roman numeral.
Practice Questions — Section B
Q9 to Q16 · L, C · Up to 100 · Moderate
- 9 Write the Hindu-Arabic value of: XLVII
- 10 Write Roman numerals for: (a) 54 (b) 68 (c) 91
- 11 Write the Hindu-Arabic value of: LXXXIII
- 12 Arrange in ascending order: LXII · XXVI · XCI · XLVIII
- 13 Write Roman numerals for: (a) 75 (b) 84 (c) 97
- 14 Spot the error and correct: (a) IIX for 8 (b) VX for 5
- 15 What is LVII + XXIII? Write answer in Roman numerals.
- 16 Which is smaller: LXXIX or LXXXIX?
Practice Questions — Section C
Q17 to Q20 · HOTs · Word problems · Reasoning
- 17 A library has LXXII English books and XLVIII Hindi books. How many books are there in all? How many more English books are there? Write both answers in Roman numerals.
- 18 Fill the number line with Roman numerals for: 88, 89, 90, 91, 92
- 19 Ravi writes XCXI for 91. Is he correct? If not, what is the correct Roman numeral and what rule did he break?
- 20 The sum of two Roman numerals is C. One of them is XLIII. Find the other and write it in Roman numerals. Also verify by adding both.
Answer Key — Practice Questions
Attempt all 20 questions before checking
🔑 Show Answer Key — All 20 Questions
▼
Section A — Q1 to Q8
Q1. VIII = 8
Q2. 12 = XII
Q3. XVII = 17
Q4. (a) IV (b) IX (c) XVI
Q5. False — XI = 11
Q6. XXIV = 24
Q7. (a) XVIII (b) XXV (c) XXIX
Q8. VIIII repeats I four times (max 3 allowed) · Correct = IX
Q9. XLVII = 47
Q10. (a) LIV (b) LXVIII (c) XCI
Q11. LXXXIII = 83
Q12. Convert: LXII=62, XXVI=26, XCI=91, XLVIII=48 · Ascending: XXVI, XLVIII, LXII, XCI
Q13. (a) LXXV (b) LXXXIV (c) XCVII
Q14. (a) IIX invalid — only one symbol before larger; correct = VIII · (b) VX invalid — V cannot subtract; correct = V
Q15. LVII=57, XXIII=23 · 57+23=80 = LXXX
Q16. LXXIX=79, LXXXIX=89 · Smaller = LXXIX
Q17. LXXII=72, XLVIII=48 · Total=120 (beyond C scope — accept CXX if taught) · More English=72−48=24=XXIV
Q18. 88=LXXXVIII · 89=LXXXIX · 90=XC · 91=XCI · 92=XCII
Q19. No, XCXI is wrong — XC already uses X subtractively; you cannot then add XI which starts with X again. The rule: once a subtractive pair is used, the next group starts fresh. Correct = XCI (XC+I = 90+1 = 91)
Q20. C=100, one number=XLIII=43 · Other = 100−43=57=LVII · Verify: XLIII+LVII = 43+57 = 100 = C ✓
