Four and ninety-one hundredths.
491 is CDXCI. CD is 500 - 100. XC is 100 - 10. (I is 1.)
491-500: cdxci, cdxcii, cdxciii, cdxciv, cdxcv, cdxcvi, cdxcvii, cdxcviii, cdxcix, d
XDI - D=500, X=10 and I=1... Placing the X before the D means you subtract it from the larger number, then add the 1. Another (longer) way to write it would be CCCLXXXIX (100+100+100+50+10+10+10+9)Additional Information:-In today's notation of Roman numerals 491 is: CDXCIBut the Romans themselves would have worked out 491 as CCCCLXXXXI and then simplified it to XDI (501-10 = 491) which uses less numerals but of equal value
491-216 = 275
There are 491 tenths in 491. This is because one whole number is equivalent to 10 tenths. Therefore, to find the number of tenths in 491, you simply multiply 491 by 10, giving you 4910 tenths.
Yes. 491 is prime.
1-492 = -491
491 + 284 = 775
491 multiplied by 3 is 1,473
491 centimeters = 4.91 meters
Itself and 1 because 491 is a prime number
491