5: Early Additive - Addition and Subtraction

 

Sam collects stamps. She has 34 stamps but gives 8 of them to her brother. How many stamps does she have left?


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Student: Thirty-four minus four is thirty. Thirty minus another four is twenty-six.

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At the Early Additive stage, students have begun to recognise that numbers are abstract units that can be treated simultaneously as wholes or can be partitioned and recombined. This is called part-whole thinking.