Factors are the numbers you multiply together to get another number
It is a common factor when it is a factor of two or more numbers.
The greatest common factor of two or more numbers is the largest number
that can divide evenly into each of the numbers.
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Answer:
"Factors" are numbers we can multiply together to get another number.
When we find the factors of two or more numbers, and then find some factors are the same ("common"), then they are the "common factors".
Example: 12 and 16
• The factors of 12 are: 1, 2, 3, 4, 6 and 12
• The factors of 16 are: 1, 2, 4, 8 and 16
So the common factors of 12 and 16 are: 1, 2 and 4