I have been a teacher for over 20 years - all the stuff I upload has been tried and tested in my classroom. I don't mind a discussion on Twitter too where I also share new resources. I now have a personal website: https://andylutwyche.com/
More questions are turning up with massive numbers given as a product of prime factors and students being asked to find the HCF or LCM, so therefore I did a codebreaker for it.
The usual stuff: maths, punchline, hahaha.
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