Additive and Multiplicative Reasoning · Calculation and Algebra
Flexible Addition and Subtraction
Moving beyond standard algorithms to use mental strategies and inverse operations.
Key Questions
- 1How can we use the inverse to prove that a calculation is correct?
- 2Why might we choose a mental strategy over a formal column method?
- 3What happens to the sum if we increase one addend but decrease the other by the same amount?
National Curriculum Attainment Targets
KS2: Mathematics - Addition and Subtraction
Year: Year 4
Subject: Mathematics
Unit: Additive and Multiplicative Reasoning
Period: Calculation and Algebra
Suggested Methodologies
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