Name _____________________________________________________ Date _________________________
GCF and LCM:
CRACK THE CODE
Find the greatest common factor (GCF) or the least common multiple (LCM) of the given sets of
numbers. Then, look for any places where that GCF or LCM appears in the code at the bottom
of the page, and write the corresponding letter on the line. Use the code to reveal the rest of the
joke! Note: Not every letter will be used in the code at the bottom.
60 75 36 92
B F
GCF: _______ GCF: _______
GCF
28 70 48 84
R O
GCF: _______ GCF: _______
16 50 98 32 40 88
K H
GCF: _______ GCF: _______
12 15 10 18
T A
LCM: _______ LCM: _______
6 14 11 4
N E
LCM
LCM: _______ LCM: _______
6 9 12 5 9 15
I W
LCM: _______ LCM: _______
10 5 3 10 20 25
P S
LCM: _______ LCM: _______
Where do polar bears store their money?
___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___
36 42 60 8 44 100 42 12 45 15 90 42 2
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