Page 31 - NUMINO_WB_6A
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101-B1-1
Common Factors and the Greatest Common Factor
1. Find the GCF of the two numbers.
Example
The largest number among all the common factors is called the greatest
common factor (GCF).
12 , 16 Factors of 12:
Factors of 16:
Common factors of 12 and 16:
The GCF of 12 and 16:
a. 27 , 36 Factors of 27:
Factors of 36:
Common factors of 27 and 36:
The GCF of 27 and 36:
b. 32 , 72 Factors of 32:
Factors of 72:
Common factors of 32 and 72:
The GCF of 32 and 72:
c. 28 , 56 Factors of 28:
Factors of 56:
Common factors of 28 and 56:
The GCF of 28 and 56:
Common Factors and the Greatest Common Factor
1. Find the GCF of the two numbers.
Example
The largest number among all the common factors is called the greatest
common factor (GCF).
12 , 16 Factors of 12:
Factors of 16:
Common factors of 12 and 16:
The GCF of 12 and 16:
a. 27 , 36 Factors of 27:
Factors of 36:
Common factors of 27 and 36:
The GCF of 27 and 36:
b. 32 , 72 Factors of 32:
Factors of 72:
Common factors of 32 and 72:
The GCF of 32 and 72:
c. 28 , 56 Factors of 28:
Factors of 56:
Common factors of 28 and 56:
The GCF of 28 and 56:
