How do you write 40 in roman number?

Answer 1

It is: 40 = XL which means 50-10 = 40

Further explanation: The Roman numeral system is different from what we use today. Numbers were divided into "tiers"- usually this is in multiples of 5. I will list a few for you, and I suggest that you take note of the tiers.

1=I

5=V

10=X

50=L

100=C

It's difficult to explain, so allow me to show you a pattern:

1=I

2=II

3=III

4=IV

5=V

6=VI

...

9=IX

10=X

11=XI

...

14=XIV

15=XV

I assume that you see the pattern here. With X (10) and V (5), anything other than I is a placeholder value, and in order to denote a number just below that value, you would put I directly before it.

This pattern follows when you reach the next placeholder: 50.

The placeholder for 50 is L. If you wanted a placeholder that was just below that value (the value of the placeholder in this case is 5), you would have to put a value that was just below that "tier" preceeding it. The example for this is 40

40=XL

This pattern continues for all placeholder values of higher degree. I hope this helps!

Answer 2

40 = XL