Reading Roman numerals (1-1,000) | Worsheets library - Free Printable

To convert Roman numerals to normal numbers (standard form), we need to know the value of each letter and how they work together.

Basic Values:
* I = 1
* V = 5
* X = 10
* L = 50
* C = 100
* D = 500
* M = 1,000

Rules:
1. If a smaller number is after a larger number, you add it (e.g., VI = 5 + 1 = 6).
2. If a smaller number is before a larger number, you subtract it (e.g., IV = 5 - 1 = 4).

Let's solve each problem step by step:

1. CDXXXIX
* CD = 500 - 100 = 400
* XXX = 10 + 10 + 10 = 30
* IX = 10 - 1 = 9
* Total: 400 + 30 + 9 = 439

2. DCXCVIII
* D = 500
* C = 100
* XC = 100 - 10 = 90
* VIII = 5 + 1 + 1 + 1 = 8
* Total: 500 + 100 + 90 + 8 = 698

3. CCXLVI
* CC = 100 + 100 = 200
* XL = 50 - 10 = 40
* VI = 5 + 1 = 6
* Total: 200 + 40 + 6 = 246

4. CLXXXIII
* C = 100
* L = 50
* XXX = 10 + 10 + 10 = 30
* III = 1 + 1 + 1 = 3
* Total: 100 + 50 + 30 + 3 = 183

5. CCCLIX
* CCC = 100 + 100 + 100 = 300
* L = 50
* IX = 10 - 1 = 9
* Total: 300 + 50 + 9 = 359

6. CDXXVI
* CD = 500 - 100 = 400
* XX = 10 + 10 = 20
* VI = 5 + 1 = 6
* Total: 400 + 20 + 6 = 426

7. DCCCXXXII
* D = 500
* CCC = 100 + 100 + 100 = 300
* XXX = 10 + 10 + 10 = 30
* II = 1 + 1 = 2
* Total: 500 + 300 + 30 + 2 = 832

8. CMXXXI
* CM = 1,000 - 100 = 900
* XXX = 10 + 10 + 10 = 30
* I = 1
* Total: 900 + 30 + 1 = 931

9. CMLIII
* CM = 1,000 - 100 = 900
* L = 50
* III = 1 + 1 + 1 = 3
* Total: 900 + 50 + 3 = 953

10. CDLXIX
* CD = 500 - 100 = 400
* LX = 50 + 10 = 60
* IX = 10 - 1 = 9
* Total: 400 + 60 + 9 = 469

11. CCLXXV
* CC = 100 + 100 = 200
* L = 50
* XX = 10 + 10 = 20
* V = 5
* Total: 200 + 50 + 20 + 5 = 275

12. CCCXXXII
* CCC = 100 + 100 + 100 = 300
* XXX = 10 + 10 + 10 = 30
* II = 1 + 1 = 2
* Total: 300 + 30 + 2 = 332

13. CLXXXVIII
* C = 100
* L = 50
* XXX = 10 + 10 + 10 = 30
* VIII = 5 + 1 + 1 + 1 = 8
* Total: 100 + 50 + 30 + 8 = 188

14. LXII
* L = 50
* X = 10
* II = 1 + 1 = 2
* Total: 50 + 10 + 2 = 62

15. DXCI
* D = 500
* XC = 100 - 10 = 90
* I = 1
* Total: 500 + 90 + 1 = 591

16. CLXV
* C = 100
* L = 50
* X = 10
* V = 5
* Total: 100 + 50 + 10 + 5 = 165

17. DCCLI
* D = 500
* CC = 100 + 100 = 200
* L = 50
* I = 1
* Total: 500 + 200 + 50 + 1 = 751

18. DCCLXIII
* D = 500
* CC = 100 + 100 = 200
* L = 50
* X = 10
* III = 1 + 1 + 1 = 3
* Total: 500 + 200 + 50 + 10 + 3 = 763

Final Answer:
1. 439
2. 698
3. 246
4. 183
5. 359
6. 426
7. 832
8. 931
9. 953
10. 469
11. 275
12. 332
13. 188
14. 62
15. 591
16. 165
17. 751
18. 763