Name:
Roman Numerals
Ancient Romans used numbers that look different from ours.
Roman Numerals
I
V
X
Our Numbers
1
5
10
To convert Roman numerals to our numbers, you add.
XII = 10 + 1 + 1, or 12
Whenever there is a 4 or 9 in Roman numerals, you will subtract.
IV = 5 - 1, or 4
IX = 10 - 1, or 9
Now look at the number below. You need to add and subtract.
XIV = 10 + 5 - 1, or 14
Write our numbers.
1. XI = 11
2. VII = 7
3. XX = 20
4. III = 3
5. IX = 9
6. XXII = 22
7. XXIV = 24
8. XXXV = 35
9. XXVIII = 28
10. 6 = VI
11. 10 = X
12. 4 = IV
13. 19 = IXX
14. 12 = XII
15. 25 = XXV
16. 21 = XXI
17. 8 = VIII
18. 34 = XXXIV
Write Roman numerals.
Name:
Roman Numerals
Ancient Romans used numbers that look different from ours.
Roman Numerals
I
V
X
L
C
D
M
Arabic Numbers
1
5
10
50
100
500
1,000
Write Arabic numbers.
1. VIII = 8
2. XV = 15
3. IX = 9
4. XXIX = 29
5. MDCCCX = 1,810
6. LXXVII = 77
7. DLIII = 553
8. MMMCDXXI = 3,421
9. MCMLXIV = 1,964
Write Roman numerals.
10. 38 = XXXVIII
11. 55 = LV
12. 237 = CCXXXVII
13. 1,231 = MCCXXXI
14. 48 = IIL
15. 90 = XC
16. 2,402 = MMCDII
17. 3,009 = MMMIX
18. 404 = CDIV