Greatest Common Factor

What is the GCF of 8 and 10?

• 1

• 3

• 4

• 2

Find the greatest common factor of 20 and 30

• 2

• 5

• 10

• 15

What is the greatest common factor of 4 and 8?

• 2

• 8

• 4

• 1

What is the greatest common factor of 10 and 25?

• 5

• 1

• 10

• ^₁

What is the greatest common factor of 32 and 40?

• 8

• 16

• 4

• 12

The Greatest Common Factor of 16 and 40 is ​ (a)  

• 8

• 4

• 5

• 2

• 16

• 32

• 3

• 11

If the GCF of two numbers is 7, which of the following pairs of numbers could it be?

• 14 and 23

• 27 and 49

• 35 and 14

• All of the above

What is the greatest common factor (GCF) of 18 and 24?

• 6

• 4

• 3

• 12

What is the greatest common factor (GCF) of 18 and 30? (Just type the number)

Mathematical Equivalence

ON

Which of the following is a common factor of 36 and 60?

• 5

• 12

• 18

• 20