GCF-LCM Homework - page 3
Name ______________
- Juan has decided to make party baskets for the fund raiser. Balloons are sold in bags of 20 and there are 8 candy bars in a package. How many of each should he buy so there are an equal number of balloons and candy bars in each basket?
Multiples of 20: ___________________________
Multiples of 8: __________________________
LCM = _____ .    
He should buy ___ bags of balloons and
____ packages of candy bars.
- A radio station is having a promotion in which every 12th caller receives a free concert ticket and every 15th caller receives a limo ride. Which caller will be the first one to win both?
This is an LCM problem:
    Multiples of 12: _________________________
    Multiples of 15: _________________________   
LCM = _____.
  The ____th caller will win both.
- I want to plant 81 corn plants and 63 tomato plants in my garden. If I put the same number of plants in each row and each row has only one type of plant, what is the greatest number of plants I can put in one row?
This is a GCF problem:
    Factors of 81: ____________________
    Factors of 63: ____________________
GCF = _____ plants in one row.
- [Extra credit]
The GCF two numbers is 6 and their LCM is 36. If one of the numbers is 18, find the other number.
    GCF(a,b) = (a x b) / LCM(a,b)
    b = ____
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