GCF and LCM

Find the greatest common factor of 20 and 30

• 2

• 5

• 10

• 15

GCF of 28 and 40

• 2

• 4

• 7

• 8

GCF of 24 and 56

• 2

• 4

• 6

• 8

GCF of 20 and 35

• 4

• 5

• 7

• 20

Is this question asking to find GCF or LCM?

• GCF

• LCM

GCF of: 
56 and 49

• 14

• 2

• 8

• 7

Is this question asking to find GCF or LCM?

• GCF

• LCM

Which pair of numbers has a GCF of 10 AND a LCM of 60?

• 2 and 5

• 20 and 30

• 5 and 10

• 15 and 20

Tags

TEKS.MATH.6.7A

The ​ GCF of 15 and 30 is ​ (a)   .

• 15

• 30

• 45

• 5

Fill in the Blank: Least _______ ________

• Common Multilpier

• Common Multiple

• Common Factor