Column Subtraction
Working towards an efficent method of column subtraction. Can be used to demonstate expanded subtraction (in which the numbers are partitioned) with or without the need for borrowing.
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KS2 Primary Framework:
Year 3:
Develop and use written methods to record, support or explain addition and subtraction of two–digit and three–digit numbers (Block A and Block D)
Year 4:
Refine and use efficient written methods to add and subtract two-digit and three-digit whole numbers (Block A and Block D)
Year 5:
Use efficient written methods to add and subtract whole numbers (Block A and Block D)
Year 6:
Use efficient written methods to add and subtract integers and decimals (Block A and Block D)