Add Two and Three-digit Numbers Using Knowledge of Place Value

In this activity, we'll look at how to add two and three digits numbers together using our knowledge of place value.

Example: 

Can you add the numbers below?

So, how do we do this?

One method is to split them into hundreds, tens and ones before adding them.

1) First, we add the hundreds column: 900 + 0 = 900

2) Then, we add the tens column: 60 + 30 = 90

3) Next, we add the ones: 9 + 8 = 17

4) Finally, we add these together: 900 + 90 + 17 = 1,007

 

Remember to put 0s as placeholders.

Have a look below and you can see these steps written in number form.

Ready to give this a go?