4.015
mx
Put the period and then put the numbers in. simple!
You would write that 0.0001.
$100,100.10
Ten
Base ten numerals are the numbers 0 to 9 that are used every day. Base ten numerals were also used in Ancient Rome, but the numbers were actually letters like eight would be VIII. These numbers were called Roman Numerals.
As far as I know, your "359" is already in base-10. If it's not, then it could be in any base larger than 10 (since the digit '9' appears), and I'd need to know its present base in order to convert it to another one.
I is one, V is five, X is ten, so XXX is thirty....
Yes.
2010 = two thousand ten.
You would write it as 10,010