Idéllo Elo’s Missions - Go to homepage.

Oops! You must be signed in with your IDÉLLO account to access the Mission.

Sign in

It's a Party!

  • Grade 7
  • Mathematics
  • Numbers


In this mission, students learn to find the greatest common factor (GCF) between groups of numbers and the least common multiple (LCM). Students use these concepts in the context of celebrations.

Learning goals

  • I determine the greatest common factor (GCF) of several numbers.
  • I determine the least common multiple (LCM) of several numbers.


  • greatest common factor (GCF)
  • least common multiple (LCM)
  • factor
  • primary factor
  • prime number
  • factoring