CD = 400 D means 500, by putting the C in front it means we're subtracting it. DC = 600
I=1 V=5 X=10 L=50 C=100 D=500 and M=1000
M/CM/XXC/I = 1981
OR - as per BBC usage, MCMLXXXI = M/CM/L/XXX/I = 1981
400 in roman numerals is CD C=100 and because it come before D (D=500) you would subtract the 100 from the 500 and make 400 which is in roman numerals is CD
Roman numerals for 201 = CCI
XXX1X
II
MCCXXVIII
400 in roman numerals is CD C=100 and because it come before D (D=500) you would subtract the 100 from the 500 and make 400 which is in roman numerals is CD
400,000,000
400,000
400,000,000,000
6.6 million 400 thousand in numbers is 7,000,000
If you write all of the counting numbers from 200 to 400,you will write the digit ' 5 ' forty times.
Roman numerals are a system for writing numbers, not words. the Roman numeral for 4 is IV.
MCMLXXXVII
XLII
MCMLXXXIX
XIIth
MMX