Greatest Common Factor

What is the GCF of 20 and 30?

• 5

• 2

• 10

• 20

GCF of 36 and 99

• 9

• 6

• 11

• 4

GCF 15 and 36

• 8

• 6

• 3

• 4

GCF of 32 and 40

• 2

• 4

• 6

• 8

• A

• B

• C

• D

GCF 24 and 36

• 8

• 6

• 12

• 4

greatest common factor of 24 and 48.

• 4

• 12

• 24

• 48

greatest common factor of 24 and 48.

• 4

• 12

• 24

• 48

What is the GCF of 6 and 12?

• 2

• 3

• 4

• 6

The table shows the number of students in the school choir. The choir teacher plans to arrange the students in equal rows. Only girls or boys will be in each row. What is the greatest number of students that could be in each row?

• 16

• 12

• 8

• 4