What I Know
Answer first the pre-test before you proceed.
Directions: Read and answer the following items carefully. Write your
answers in your worksheet.
1. What is the Greatest Common Factor (GCF) of 12 and 20?
a. 2
b. 4
c. 5
d. 10
2. 10 is the Greatest common factor (GCF) of
a. 10 and 20
b. b. 20 and 30
C, 10 and 30
d. All of the above
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