Exercise 4a: GCF & LCM

  • Do two natural numbers always have a GCF? _____
  • How small can the GCF be for any pair of natural numbers?
  • How big can the GCF be for any pair of natural numbers?
  • Do two natural numbers always have an LCM? _____
  • How small can the LCM be for any pair of natural numbers?
  • How big can the LCM be for any pair of natural numbers?

GCF(24,90) = __________

GCF(17,85) = __________

GCF(27,32) = __________

GCF(0,13) =   __________

LCM(24,90) = __________

LCM(17,85) = __________

LCM(27,32) = __________

LCM(0,13) =   __________