Mathematics for Carpenters and Builders - Carpenter's and Builder's Math, Plans, and Specifications - page 114

Table 5-1 Roman Numeral Values
Roman Numeral

Value

I 1

II 2

III 3

IV 4

V 5

VI 6

VII 7

VIII 8

IX 9

X 10

XI 11

XII 12

XIII 13

XIV 14

XV 15

XVI 16

XVII 17

XVIII 18

XIX 19

XX 20

XXX 30

XL 40

L 50

LX 60

LXX 70

LXXX 80

XC 90

C 100

D 500

M 1000

X 10,000

M 1 million