Definition:Accuracy/Decimal Places

Definition
A representation $y$ in decimal notation of a number $x$ is:
 * accurate to $n$ decimal places


 * the number $n$ of digits after the decimal point of $x$ match the first $n$ digits after the decimal point of $y$, without rounding.
 * the number $n$ of digits after the decimal point of $x$ match the first $n$ digits after the decimal point of $y$, without rounding.

Also see

 * Definition:Error