1
What is a Prime Factor?
A prime factor is a number, other than 1, whose only factors are 1 and itself.
The first few prime numbers are 2, 3, 5, 7, 11, and so on.
2
What is a "common factor" AND what is the "greatest common factor"?
Factors that are shared by two or more numbers are called COMMON FACTORS.
The greatest of the common factors is called the greatest common factor
(GCF). One way to fi nd the GCF of two or more numbers is by listing factors.
3
What is a "Venn diagram"?
A Venn diagram uses circles to describe relationships between two or more sets.