Each digit of a number, such as 495,786, has a different place value name.

4 9 5,7 8 6
| | | | | |__ digits' place value
| | | | |____ tens' place value
| | | |______ hundreds' place value
| | |________ thousands' place value
| |__________ ten-thousands' place value
|____________ hundred-thousands' place value

There are 4 sets of one hundred thousand, 9 sets of ten thousand, 5 sets of one thousand, 7 sets of one hundred, 8 sets of ten, and 6 ones in the number 495,786.

Expanded form shows the number expanded into an addition statement. The expanded form of 495,786 is 400,000 + 90,000 + 5,000 + 700 + 80 + 6.