Prime Factorization, LCM, and GCF

Which set lists all the factors of 24?

• 1, 2, 3, 6, 7, 12, 24
• 1, 2, 3, 4, 6, 8, 12, 24
• 1, 2, 3, 4, 5, 6, 8, 12, 24
• 1, 3, 4, 6, 8, 24

Tags

CCSS.4.OA.B.4

Which one is a multiple of 4?

• 33
• 22
• 18
• 24

Tags

CCSS.4.OA.B.4

Which of these numbers is not prime?

• 17
• 25
• 23
• 37

Which is not a factor of 18?

• 7
• 2
• 3
• 9

Tags

CCSS.4.OA.B.4

Which of the following is prime?

• 18

• 19

• 27

• 45

Tags

CCSS.4.OA.B.4

Which lists all the factors of 20?

• 1, 2, 4, 5, 10, 20
• 1, 2, 5, 10, 20
• 1, 4, 5, 20
• 1, 2, 10, 20

Tags

CCSS.4.OA.B.4

2 x 2 x 2  or 2³ is the prime factorization of

• 6
• 12
• 22
• 8

Tags

CCSS.4.OA.B.4

GCF of 8 and 20

• 8
• 2
• 4
• 10

Tags

CCSS.4.OA.B.4

What is the least common multiple (LCM) of 6 and 8?

• 6
• 8
• 48
• 24

Tags

CCSS.4.OA.B.4

Create a factor tree and find the prime factorization for 80

• 2⁴⋅5

• 4²⋅5

• 2⋅2⋅2

• 8⋅5⋅2

Tags

CCSS.6.EE.A.1