<span>In our decimal number system, the value of a digit depends on its place, or position, in the number. Each place has a value of 10 times the place to its right......:)</span>
<span>A number in standard form is separated into groups of three digits using commas. Each of these groups is called a period....:) I also put a link down that may help.....its a video on how to do it! I hope this helps!</span>