Partition Addition: The Expanded Method
This lesson leads them from the informal vertical partitioning method to the expanded addition method. Starting with adding a two-digit number to a three-digit number, they will then extend to adding two three-digit numbers using this method. The main activity allows them to practise this method, and there is an alternative differentiated investigation for those who feel up to the challenge!
- Lesson plan
- Activity ideas
- Differentiated worksheets
- Challenge cards