Prime Decomposition to Find LCM and HCF

This is a wee task to help students get familiar with the process of finding the lowest common multiple and highest common factor between two numbers using prime decomposition.

I did not know Venn diagrams had to be circles so I have uploaded one with circles and one with rectangles. I just prefer rectangles as for me, they are easier to draw :)


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  • primes-lcm-hcf-task.pdf
  • primes-lcm-hcf-task-circles.pdf

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Created: Oct 4, 2020

Updated: Oct 9, 2020

pdf, 29 KB


pdf, 29 KB


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Creative Commons "Sharealike"

Creative Commons "Sharealike"