Positional decimal systems include a zero and use symbols ( called digits ) for the ten values ( 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , and 9 ) to represent any number , no matter how large or how small .
Decimal notation is the writing of numbers in the base-ten numeral system , which uses various symbols ( called digits ) for no more than ten distinct values ( 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 and 9 ) to represent any numbers , no matter how large .