Numbers up to 1000

Every digit in a number has a 'place value' which tells us its worth. For numbers up to 1000, we mainly look at three places: Ones, Tens, and Hundreds.\n\n1. **Ones Place**: This is the rightmost digit. It tells us how many single units are there. For example, in the number 345, the digit '5' is in the Ones place, meaning 5 ones or 5.\n2. **Tens Place**: This is the digit to the left of the Ones place. It tells us how many groups of ten are there. For example, in 345, the digit '4' is in the Tens place, meaning 4 tens or 40.\n3. **Hundreds Place**: This is the digit to the left of the Tens place. It tells us how many groups of hundred are there. For example, in 345, the digit '3' is in the Hundreds place, meaning 3 hundreds or 300.\n\nWe can write numbers in their **expanded form** by showing the value of each digit. For 345, the expanded form is 300 + 40 + 5.

Counting in tens means adding 10 to the previous number each time. This helps us count quickly in groups of ten. For example, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100. We can continue this pattern: 110, 120, 130, and so on, all the way up to 1000. When we count in tens, only the digit in the Tens place changes, unless we cross a hundred boundary (like from 90 to 100, or 190 to 200).

Counting in hundreds means adding 100 to the previous number each time. This helps us count quickly in groups of one hundred. For example, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000. When we count in hundreds, only the digit in the Hundreds place changes.