Roman Numerals Worksheet for Practice and Learning
Worksheet on Roman numerals with exercises to match Roman numerals to Arabic numbers, choose correct answers, and solve addition and subtraction problems.
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Step-by-step solution for: Roman Numerals online exercise
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Show Answer Key & Explanations
Step-by-step solution for: Roman Numerals online exercise
Let's solve this Roman numeral worksheet step by step.
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We are given five Roman numerals on the left and five numbers on the right. We need to match them correctly.
#### Roman Numeral Values:
- I = 1
- V = 5
- X = 10
- L = 50
- C = 100
- D = 500
- M = 1000
Also, when a smaller numeral appears before a larger one, it is subtracted (e.g., IV = 4, IX = 9).
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1. XXV
- X = 10, X = 10, V = 5 → 10 + 10 + 5 = 25
✔ Match with 25
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2. CLVI
- C = 100, L = 50, V = 5, I = 1 → 100 + 50 + 5 + 1 = 156
✔ Match with 156
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3. XXXVII
- X = 10, X = 10, X = 10, V = 5, I = 1, I = 1 → 10+10+10+5+1+1 = 37
✔ Match with 37
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4. CCCXXI
- C = 100, C = 100, C = 100, X = 10, X = 10, I = 1 → 100+100+100+10+10+1 = 321
✔ Match with 321
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5. XCVIV
- XC = 90 (X before C means 100 - 10), IV = 4 → 90 + 4 = 94
✔ Match with 94
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1. XXV → 25
2. CLVI → 156
3. XXXVII → 37
4. CCCXXI → 321
5. XCVIV → 94
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We'll convert each Roman numeral to its Arabic number or vice versa.
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6. CVIII
- C = 100, V = 5, III = 3 → 100 + 5 + 3 = 108
✔ Answer: 108
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7. LXV
- L = 50, X = 10, V = 5 → 50 + 10 + 5 = 65
✔ Answer: 65
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8. XXXIX
- XXX = 30, IX = 9 → 30 + 9 = 39
✔ Answer: 39
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9. MMXXI
- M = 1000, M = 1000, XX = 20, I = 1 → 1000 + 1000 + 20 + 1 = 2021
✔ Answer: 2021
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10. CLXVI
- C = 100, L = 50, X = 10, V = 5, I = 1 → 100 + 50 + 10 + 5 + 1 = 166
✔ Answer: 166
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11. 260 → Roman Numeral
- 260 = 200 + 60 = CC + LX → CCLX
✔ Answer: CCLX
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12. 2010 → Roman Numeral
- 2000 = MM, 10 = X → MMX
✔ Answer: MMX
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13. 350 → Roman Numeral
- 300 = CCC, 50 = L → CCCL
✔ Answer: CCCL
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14. 130 → Roman Numeral
- 100 = C, 30 = XXX → CXXX
✔ Answer: CXXX
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15. 73 → Roman Numeral
- 70 = LXX, 3 = III → LXXIII
✔ Answer: LXXIII
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6. 108
7. 65
8. 39
9. 2021
10. 166
11. CCLX
12. MMX
13. CCCL
14. CXXX
15. LXXIII
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Now we do basic arithmetic using Roman numerals.
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16. VI + IV = ?
- VI = 6, IV = 4 → 6 + 4 = 10 → X
✔ Answer: X
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17. III + VII = ?
- III = 3, VII = 7 → 3 + 7 = 10 → X
✔ Answer: X
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18. X - V = ?
- X = 10, V = 5 → 10 - 5 = 5 → V
✔ Answer: V
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19. XX - XI = ?
- XX = 20, XI = 11 → 20 - 11 = 9 → IX
✔ Answer: IX
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20. L + XXX = ?
- L = 50, XXX = 30 → 50 + 30 = 80 → LXXX
✔ Answer: LXXX
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16. X
17. X
18. V
19. IX
20. LXXX
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#### Matching (1–5):
1. XXV → 25
2. CLVI → 156
3. XXXVII → 37
4. CCCXXI → 321
5. XCVIV → 94
#### Convert (6–15):
6. CVIII → 108
7. LXV → 65
8. XXXIX → 39
9. MMXXI → 2021
10. CLXVI → 166
11. 260 → CCLX
12. 2010 → MMX
13. 350 → CCCL
14. 130 → CXXX
15. 73 → LXXIII
#### Arithmetic (16–20):
16. VI + IV = X
17. III + VII = X
18. X - V = V
19. XX - XI = IX
20. L + XXX = LXXX
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Let me know if you'd like this formatted as a printable answer sheet!
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Part 1: Match the Roman numerals to the correct numbers
We are given five Roman numerals on the left and five numbers on the right. We need to match them correctly.
#### Roman Numeral Values:
- I = 1
- V = 5
- X = 10
- L = 50
- C = 100
- D = 500
- M = 1000
Also, when a smaller numeral appears before a larger one, it is subtracted (e.g., IV = 4, IX = 9).
---
1. XXV
- X = 10, X = 10, V = 5 → 10 + 10 + 5 = 25
✔ Match with 25
---
2. CLVI
- C = 100, L = 50, V = 5, I = 1 → 100 + 50 + 5 + 1 = 156
✔ Match with 156
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3. XXXVII
- X = 10, X = 10, X = 10, V = 5, I = 1, I = 1 → 10+10+10+5+1+1 = 37
✔ Match with 37
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4. CCCXXI
- C = 100, C = 100, C = 100, X = 10, X = 10, I = 1 → 100+100+100+10+10+1 = 321
✔ Match with 321
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5. XCVIV
- XC = 90 (X before C means 100 - 10), IV = 4 → 90 + 4 = 94
✔ Match with 94
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✔ Matching Summary:
1. XXV → 25
2. CLVI → 156
3. XXXVII → 37
4. CCCXXI → 321
5. XCVIV → 94
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Part 2: Choose the correct answer (Roman to Arabic or vice versa)
We'll convert each Roman numeral to its Arabic number or vice versa.
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6. CVIII
- C = 100, V = 5, III = 3 → 100 + 5 + 3 = 108
✔ Answer: 108
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7. LXV
- L = 50, X = 10, V = 5 → 50 + 10 + 5 = 65
✔ Answer: 65
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8. XXXIX
- XXX = 30, IX = 9 → 30 + 9 = 39
✔ Answer: 39
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9. MMXXI
- M = 1000, M = 1000, XX = 20, I = 1 → 1000 + 1000 + 20 + 1 = 2021
✔ Answer: 2021
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10. CLXVI
- C = 100, L = 50, X = 10, V = 5, I = 1 → 100 + 50 + 10 + 5 + 1 = 166
✔ Answer: 166
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11. 260 → Roman Numeral
- 260 = 200 + 60 = CC + LX → CCLX
✔ Answer: CCLX
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12. 2010 → Roman Numeral
- 2000 = MM, 10 = X → MMX
✔ Answer: MMX
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13. 350 → Roman Numeral
- 300 = CCC, 50 = L → CCCL
✔ Answer: CCCL
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14. 130 → Roman Numeral
- 100 = C, 30 = XXX → CXXX
✔ Answer: CXXX
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15. 73 → Roman Numeral
- 70 = LXX, 3 = III → LXXIII
✔ Answer: LXXIII
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✔ Part 2 Answers:
6. 108
7. 65
8. 39
9. 2021
10. 166
11. CCLX
12. MMX
13. CCCL
14. CXXX
15. LXXIII
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Part 3: Arithmetic with Roman Numerals
Now we do basic arithmetic using Roman numerals.
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16. VI + IV = ?
- VI = 6, IV = 4 → 6 + 4 = 10 → X
✔ Answer: X
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17. III + VII = ?
- III = 3, VII = 7 → 3 + 7 = 10 → X
✔ Answer: X
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18. X - V = ?
- X = 10, V = 5 → 10 - 5 = 5 → V
✔ Answer: V
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19. XX - XI = ?
- XX = 20, XI = 11 → 20 - 11 = 9 → IX
✔ Answer: IX
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20. L + XXX = ?
- L = 50, XXX = 30 → 50 + 30 = 80 → LXXX
✔ Answer: LXXX
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✔ Part 3 Answers:
16. X
17. X
18. V
19. IX
20. LXXX
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✔ Final Answer Key:
#### Matching (1–5):
1. XXV → 25
2. CLVI → 156
3. XXXVII → 37
4. CCCXXI → 321
5. XCVIV → 94
#### Convert (6–15):
6. CVIII → 108
7. LXV → 65
8. XXXIX → 39
9. MMXXI → 2021
10. CLXVI → 166
11. 260 → CCLX
12. 2010 → MMX
13. 350 → CCCL
14. 130 → CXXX
15. 73 → LXXIII
#### Arithmetic (16–20):
16. VI + IV = X
17. III + VII = X
18. X - V = V
19. XX - XI = IX
20. L + XXX = LXXX
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Let me know if you'd like this formatted as a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of roman numeral worksheet for grade 3.
