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HCF and LCM

Highest common factor and lowest common multiple.

Skill: Factors, multiples, HCF and LCM

How to play

  1. HCF: the biggest number that divides both.
  2. LCM: the smallest number both divide into.
  3. Check: HCF × LCM = the two numbers multiplied.

Example: HCF(12, 18) = 6 and LCM(12, 18) = 36

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