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'Gift Stacks' printed from https://nrich.maths.org/

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Why do this problem?

This problem encourages learners to apply their knowledge of number operations using trial and improvement. It could also be used to introduce algebraic notation to older children.

Key questions

What could you try to start with?
Have you checked it fits all the information?
What could we try next?

Possible support

Using blocks or counters to represent gifts will help pupils to try out their ideas.