Additive Thinking and Strategy · Addition and Subtraction

Checking for Accuracy

Using the inverse operation to verify results and identify errors in calculation.

Key Questions

  1. 1How can we be sure our answer is correct without asking a teacher?
  2. 2What is the most efficient way to check a long string of additions?
  3. 3If an answer looks too big or too small, what might have gone wrong in the process?

National Curriculum Attainment Targets

KS1: Mathematics - Addition and Subtraction
Year: Year 2
Subject: Mathematics
Unit: Additive Thinking and Strategy
Period: Addition and Subtraction

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