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Subtract the Reverse - An Investigation Activity

Subtract the Reverse - An Investigation Activity

Subject: Mathematics

Age range: 11-14

Resource type: Worksheet/Activity

Last updated

11 September 2025

pptx, 212 KB
pptx, 212 KB

A PowerPoint that prompts students to investigate the missing digits of a column subtraction calculation, revealing some patterns/sequences. A nice exploration task for lower years and an elegant algebraic proof for those wanting more challenge.

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Creative Commons "NoDerivatives"

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