GCF

Identify the correct list for all the factors 12....

• 1, 2, 3, 4, 6, 12

• 1, 2, 3, 5, 6, 12

• 1, 2, 3, 4, 8, 12

• 1, 2, 3, 6, 12

What are the factors of 16 and 24?

• 16-1, 3, 6, 12, 16
  24-1, 2, 4, 6, 24
• 16-1, 2, 4, 8, 16
  24-1, 2, 3, 4, 6, 8, 12, 24
• 16-16, 32, 48, 54
  24-24, 48, 72, 86
• 16- 1, 2, 16
  24-1, 2, 12, 24

What is the greatest common factor of 8 and 10?

• 1
• 3
• 4
• 2

What is the greatest common factor of 16 and 24? 

• 6
• 2
• 4
• 8

What is the greatest factor of 28 and 49?

• 1
• 2
• 7
• 12

Tags

CCSS.7.EE.A.1

Use a factor tree to find the prime factorization of 50.

• 2 x 2 x 5 x 5

• 5 x 5 x 3 x 2

• 2 x 5 x 5

• 2 x 25

Use a factor tree to find the prime factorization 130.

• 5 x 2 x 13

• 5 x 2 x 5 x 13

• 10 x 3 x 5 x 2

• 2 x 3 x 3 x 5

Which of the following numbers is prime?

• 15

• 18

• 19

• 21

Which of the following is composite?

• 11

• 13

• 19

• 21

GCF 15 and 33

• 15
• 3
• 11
• 5