Greatest Common Factor

Lesson 4

Multiple Select

What is the greatest common factor?

• smallest common multiple

• product of numbers

• largest common factor

Fill in the Blanks

The greatest common factor of 15 and 30 is

.

Multiple Choice

What is the GCF of 12 and 20?

• 2

• 4

• 6

• 5

Fill in the Blanks

The GCF of 9 and 15 is

.

Multiple Select

Find the GCF of 24, 30 and 48.

• 6

• 8

• 12

Multiple Choice

What is the greatest common factor of 16, 32 and 40?

• 4

• 8

• 16