This activity is about hundreds, tens and ones.
In a three-digit number the digits go in columns.
| Hundreds | Tens | Ones |
Look at the number:
345
Put each digit in the columns like this:
| Hundreds | Tens | Ones |
| 3 | 4 | 5 |
So 345 is 3 hundreds, 4 tens and 5 ones, which is three hundred and forty-five.
345 = 300 + 40 + 5
Let's practise breaking down numbers in the questions that follow.






