cdxc
400+90
The Roman numeral CDXC represents the number 490. C (100) is subtracted from D (500) to give 400, and XC (90) is added to 400 to get 490.
In todays notation of Roman numerals they represent 490
On Converting between Arabic and Roman Numbers we get: 490 in roman numerals is written as : CDXC where 400=CD XC=90.
490 is an even number.
CDXC
Under today's rules 490 expressed in Roman numerals is CDXC but the Romans themselves would have probably preferred XD.
CDXC
it is 494 D=500 XD=490 V=5 IV=4 XDIV=494
It was the equivalent of 490 in the times of the ancient Romans but the modern way of writing 490 in Roman numerals is now CDXC
XD = 490
XD is not in the standard form for a Roman numeral, but I would guess its value is 490. It should be written as CDXC
It is 490 when rounded to the nearest whole number and not 489