- Each place directly to the left is 10x larger than the place to the right.
- Each place directly to the right is 1/10 the size of the place directly to the left.
| Millions Period | Thousands Period | Ones Period |
| hundreds | thousands | ones| hundreds | thousands | ones| hundreds | thousands | ones|
| ones | tenths | hundredths | thousandths |
> greater than
< less than
= equal to
In order to compare numbers, stack them and determine which number is greater or less than by looking at the first digit that is different than the other.
The numbers 345 are the same, but 6 is less than 8, therefore 345,687,201 < 345,878,102. You could also say 345,878,102 > 345,687,201