Add 2-digit numbers using column addition
I can add 2-digit numbers using column addition.
Add 2-digit numbers using column addition
I can add 2-digit numbers using column addition.
Lesson details
Key learning points
- The addends are written in columns with the same value digits in the same column
- Start by adding numbers with the smallest place value first
- Record the sum below the addends
Common misconception
Pupils may refer to adding numbers in the tens as 3 + 6 rather than 30 + 60
Encourage them to refer to the tens numbers as tens, and use the language appropriately. In 34 + 44, we add 4 and 4 together and then we add 30 and 40 together. This will support their reasoning as they progress in this unit.
Keywords
Addend - An addend is a number added to another.
Sum - The sum is the the total when numbers are added together.
Column addition - Column addition is a way of adding numbers by writing a number below another.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
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