P5 Problem sums (1 item unchanged, total unchanged, constant difference)

These are the few type of common P5 problem sums that ‘kill’ some students.
But as long as they can identify what part of problem sum they are, the process of problem-solving is pretty similar. 🙂

Will be going through these questions in class this week.

P5 Problem sums on 1item unchanged,total unchanged and constant diff

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