Yep!!!
another 'techo' word. This time it just means that to
represent some numbers you need to subtract the value
of the smaller number from the larger.
e.g.
XL = 50 - 10 = 40
Personally
I like the way it is shown on the chalk board but you'll
have to work out which way works for you.
When
you think you've got it, try these:
-
IV =
- IX
=
- CM =
- XC =
- CD =
Now
make up IV questions for
your friends to make sure they have mastered this concept.
