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Bite 1:

Partition, rearrange and regroup numbers to at least 1000 to solve additive problems

• Use quantity values and non-standard partitioning to solve addition and subtraction problems

• Model addition with and without regrouping and record the method used

• Model subtraction with and without regrouping and record the method used

• Use an algorithm with understanding to record addition and subtraction calculations, where efficient, involving 3-digit numbers

• Recognise how hundreds are exchanged in subtraction algorithms requiring regrouping

• Recognise when mental strategies would be more efficient than a vertical algorithm for subtraction

• Solve subtraction questions with missing digits given the difference