Greatest Common Factor (GCF)

The greatest of the common factors of two or more numbers.

1) Prime Factorization

2) Venn Diagrams

Steps in order to find GCF:

Find the GCF of 54 and 36 54 36

6 9 6 6

3 2 3 3 3 2 3 2

3,2,3 23

GCF (18)

Find the GCF of 81 and 108

Prime Factorization :

81 108 9 9 9 12

3 3 3 3 3 3 4 3 3 3 3 3 3 3 2 2 3

Venn Diagram :

3,3,33 2 2GCF (27)

Lets see you do some:

35 & 49 18 & 24

1) Prime Factorization

2) Venn Diagrams

Steps in order to find GCF: