The Romans had a different system for writing numbers. Look carefully around you, as Roman numerals can turn up in unexpected places!
I
II
III
IV
V
VI
VII
VIII
IX
X
1
2
3
4
5
6
7
8
9
10
XI
XII
XIII
XIV
XV
XVI
XVII
XVIII
XIX
XX
11
12
13
14
15
16
17
18
19
20
XXX
XL
L
LX
LXX
LXXX
XC
C
M
30
40
50
60
70
80
90
100
1000
II
x Tabula
X
x Tabula
I x II = II
I x X = ____
II
x ____ = IV
II x ____ = XX
____
x II
= VI
III x X = ____
IV
x II = ____
____
x X
= XL
____
x II
= X
V x X = ____
VI
x II = ____
VI x ____ = LX
VII
x ____ = XIV
____ x X
= LXX
VIII x II = XVI
VIII x X = LXXX
IX
x ____ = XVIII
IX x X = ____
X
x II = ____
X x X = ____
____
x II
= XXII
____
x X
= CX
XII
x II = ____
XII x X = ____