If you ment one and 400, it's I and CD. If you ment 1,400, it's MCD
CD is the Roman numeral for 400.
400
CD
400 = CD
CD
CD = 400
497 = 400 + 90 + 7 = CDXCVII
Converting between Arabic and Roman Numbers we get,roman numeral CD in standard form is written as 400. CD=400.
1 = I as a Roman numeral
XVXVXAnother answer:400 in Roman numerals is CD (-100+500 = 400) but 100-1400=400 still because the numeral ups one after subtraction so actually(-100+500 = 400) doesn't exist
It is the equivalent of 1/2+1/2 = 1 or I as a Roman numeral
The number 1443 written as a roman numeral would be: MCDXLIII.Translation:M = 1000CD = 500 - 100 = 400XL = 50 - 10 = 40III = 1 + 1 + 1 = 3Total: 1000 + 400 + 40 + 3 = 1443.