Finding Factors and Gcf

Based on the image, what is the LCM of 80 & 60?

• 9

• 20

• 12

• 240

What is the GCF of 2 prime numbers?

• 1

• 2

• 3

• 100

What is the GCF of 4 and 12?

• 3

• 1

• 6

• 4

What is the greatest factor of 28 and 49?

• 1

• 2

• 7

• 12

What is the GCF of 20 and 30?

• 5

• 2

• 10

• 20

Which number is not a factor of 24?

• 6

• 8

• 3

• 14

Tags

CCSS.4.OA.B.4

Which number is a factor of 6?

• 12

• 2

• 8

• 10

Tags

CCSS.4.OA.B.4

Which set of numbers show all the factors for 15?

• 7, 8

• 1, 15

• 1, 3, 5, 15

• 3, 5, 15

Tags

CCSS.4.OA.B.4

What is the GCF of 24 and 35?

• 5

• 7

• 1

What is the LCM of 6 and 10

• 6

• 10

• 60

• 30