Partition Addition: Checking with the Inverse

Year 3


SKU: M3IL30082

After going back through an example of how to use partitioning to solve addition problems, your class will be challenged to work out how they can check their calculations using subtraction on a number line. Giving many chances to check calculations as a class, including those with errors to spot, the slides will prepare them for their independent learning. They can solve and check some calculations of their own, or check whether given calculations are correct.
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