1-29. VALUES OF COMBINED NUMERALS
a. When a smaller valued or the same valued numeral follows another numeral,
the numerals are to be added.
(1)
II
=
1 +1=
2
(2)
VI
=
5+1 =
6
(3)
XXIII =
10 + 10 + 1 + 1 + 1 = 23
b.
Convert the following Roman numerals to Arabic numbers:
(1)
CCXXXII
= ______________________
(2)
XII
= ______________________
(3)
LVI
= ______________________
c.
Answers: (1) 232, (2) 12, (3) 56
d. When the numeral of a smaller value is placed in front of a numeral of larger
value, the smaller value is to be subtracted from the larger value.
(1)
IV =
5
-
1
=
4
(2)
IX =
10
-
1
=
9
(3)
VC =
100
-
5
=
95
*
(4)
LIV=
50
+
4
=
54
*NOTE: In this case a smaller value I preceded a larger value V. Therefore, the
smaller value had to be subtracted from the larger, making it four.
e.
Convert the following Roman numerals to Arabic numbers:
(1)
XL
=
_________ (5)
XIV
=
_________
(2)
XIX
=
_________ (6)
XXXI =
_________
(3)
IVss =
_________ (7)
XLIII =
_________
(4)
XCIV =
_________ (8)
CIII
=
_________
f.
Answers: (1) 40, (2) 19, (3) 4 1/2, (4) 94, (5) 14, (6) 39, (7) 43, (8) 103.
MD0802
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