  ### Comprehensive & curriculum aligned

In this worksheets, students add together a two-digit number and a three digit number using a formal column method. Key stage:  KS 2

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Add/Subtract up to Four-Digit Numbers

Difficulty level:   #### Worksheet Overview

In this activity, we'll look at how to add two and three digits numbers together.

For example:

Question - Can you add the numbers below together?

 + 6 9 9 3 8

So, how do we do this?

1) First, we add the 100 columns first - 900 + 0 = 900

2) Then, we add the 10 columns - 60 + 30 = 90

3) Next, we add the ones - 9 + 8 = 17

4) Finally, we add these together - 900 + 90 + 17 = 1007

Remember to put 0s as placeholders

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

 + 6 9 9 3 8 9 0 0 9 0 1 7 1 0 0 7

Ready to give this a go?

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