Prime Factorization & GCF

A prime number...

• has one factor.
• has more than 2 factors.
• has 100 factors.
• has exactly 2 factors: 1 and the itself.

A composite number ...

• has more than 2 factors.
• has one factor.
• has at least 10 factors.
• is always a really big number.

Which of the following is NOT prime?

• 29

• 23

• 17

• 39

Tags

CCSS.4.OA.B.4

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

• 6
• 12
• 22
• 8

Which is the prime factorization of 12? 

• 2 x 6
• 2 + 2 + 2 + 2 + 2 + 2 
• 2² x 3
• 1 x 2² x 3

If the expanded form is 2⋅2⋅2⋅3⋅3⋅5⋅7 what would the exponential form be?

• 2⋅3⋅5⋅7
• 2³⋅3²⋅5⋅7
• 2²⋅3²⋅5⋅7
• 8⋅9⋅35

Create a factor tree and find the prime factorization for 80

• 2⁴⋅5
• 4²⋅5
• 2⋅2⋅2
• 8⋅5⋅2

Write 144 in prime factorization. You can use the ladder or factor tree. Show your work.

• 2² x 3⁴
• 2⁴ x 3²
• 2³ x 3³
• 2⁴ x 3³

Tags

CCSS.6.EE.A.1

GCF of 10 and 50

• 10
• 2
• 5
• 50

GCF of 5 and 35

• 7
• 5
• 2
• 35