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Add Numbers Using a Written Method

In this worksheet, students will use a formal written method to add numbers with 1 and 2 digits.

' Add Numbers Using a Written Method' worksheet

Key stage:  KS 2

Year:  Year 3 Maths worksheets

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Use Written Addition/Subtraction to Three Digits

Difficulty level:  

Worksheet Overview

When we are asked to add numbers such as 15 + 5, we can sometimes work out the answer in our heads.



However, when we are given questions with bigger numbers, we might need to use a written method.


In this activity, we'll look at the columnar method to add numbers.



Let's have a look at how we can use the method to add 42 + 44



First, we write the numbers in columns under the correct unit (T = tens, O = ones ).




4 2

4 4




Starting at the right-hand column (ones) we add each column and write the answers underneath.



4 2

4 4

9 6


42 + 44 = 86



Here's another example:



7 2

2 5

9 7



72 + 25 = 97


With this method, it is vital that we start with the ones column! This is because when the digits in a column add up to ten or more, we have to exchange, sometimes known as 'borrowing' - we'll look at this in another activity!



Now, why don't you have a go at answering some questions using this method?


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