Obviously, if you wanted to express 500,000 in Scientific Notation, you would get: 5 x 10^5 My question is, what if you were asked to express 570,098? Move the decimal 5 places to the left, and you'd get 5.70098. Apply Scientific Notation, and you get 5.70098 x 10^5 However, this expression actually contains MORE numbers than the original number, which is not the goal of Scientific Notation. So is SN just for expressing approximations of large numbers??? Should I have rounded 570,098 to 570,000??? Thanks a lot.