Factorise two numbers into prime trees. Match the prime factors they share to find the HCF, then use the remaining primes with the HCF to find the LCM.
✏️ Type a factor pair for each composite number
🔗 Match the prime factors common to both trees
✖️ Enter the HCF (product of shared primes)
🔄 Select the remaining primes × HCF = LCM
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