GCF-LCM In-class Exercise - page 3

Name ______________

These problems ask for either the LCM or the GCF of 2 numbers:
  1. The product of two numbers is 192. If the GCF of the numbers is 4, find their LCM


    LCM = _____

  2. At the gym, Marcie swims every 6 days and cycles every 16 days. If she did both activities today, in how many days will she do both activities again on the same day?
    This is an LCM problem:
    Multiples of 6: ___________________________
    Multiples of 16: __________________________

    LCM = _____ days.


  3. Donal needs to ship 14 rock CDs and 8 pop CDs. He can pack only one type of CD in each box and he must pack the same number of CDs in each box. What is the greatest number of CDs Donal can pack in each box?
    This is an GCF problem:
    Factors of 14: _________________________
    Factors of 8: _________________________

    GCF = _____ in each box.