Prime Factorization and GCF

Prime Factorization and GCF

Multiple Choice

Use a number tree to find the prime factorization of 48

• 4x2x6
• 4x2²x3
• 3x2⁴
• 12x4

Multiple Choice

What is the GCF of 20 and 30?

• 5
• 2
• 10
• 20

Multiple Choice

Create a factor tree and find the prime factorization for 80

• 2⁴⋅5

• 4²⋅5

• 2⋅2⋅2

• 8⋅5⋅2

Multiple Choice

GCF of 8 and 20

• 8
• 2
• 4
• 10

Multiple Choice

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

Multiple Choice

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

• 6
• 12
• 22
• 8

Multiple Choice

Which number is not a multiple of 7?

• 70

• 77

• 63

• 55

Multiple Choice

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

Multiple Choice

Which of the following is prime?

• 18

• 19

• 27

• 45

Multiple Choice

Which of these numbers is not prime?

• 17
• 25
• 23
• 37