when we deal with money, it's usually a dollar amount and a cents amount, and there are 100 cents in a dollar.. so like if you go buy a cheeseburger or whatever it might cost 1.49. when youre writing a check(cheque?) and youre not using a cents amount, you just write something like no/100's or x/100, 0/100 or something like that so people cant try to add in some cents later :P
I'll upload a picture ;)