Use Knowledge of Place Value to Add Two 3-Digit Numbers

In this activity, we will be looking at how to use our knowledge of place value to add three-digit numbers.

Example

 Add the numbers together.

Answer 

We split the two numbers into hundreds, tens and ones.

First, add the hundreds: 100 + 900 = 1,000

Next, add the tens:  50 + 60 = 110

Finally, add the ones: 8 + 1 = 9 

Now we can put these numbers together:

So we now have 1,119 in the answer box.

Do you feel happy with that?

Let's have a go at some questions now.