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Column subtraction - Adding and subtracting: Video playlist - BBC Bitesize
Use column subtraction when numbers are too large to subtract mentally.
↗ https://www.bbc.co.uk/bitesize/topics/zqrtjfr/watch/zwg6wsgUse column subtraction when numbers are too large to subtract mentally.
↗ https://www.bbc.co.uk/bitesize/topics/zqrtjfr/watch/zwg6wsg