We use place value headings like 10, 100, 1000. These help us do sums and see which numbers are bigger than others. The following resource from BBC Bitesize provides information on the number system, including:
- Multiplying by 10, 100, or 1000
- Diving by 10, 100, or 1000
- Rounding numbers
- Ordering numbers
The number machine game is a great interactive tool to see how these number systems work.