Final Review #2

Which are the factors of 24?

• 1, 2, 3, 8, 12, 24

• 2, 3, 4, 6, 8, 12

• 1, 2, 3, 4, 6, 8, 12, 24

A composite number ...

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

A prime number...

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

Which of the following is NOT prime?

• 29

• 23

• 17

• 39

Is 5, a prime or composite number? 

• Prime
• Composite

Is 12, a prime or composite number? 

• Prime
• Composite

Use a number tree to find the prime factorization of 48

• 4x2x6
• 4x2²x3
• 3x2⁴
• 12x4

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

• 6
• 12
• 22
• 8

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. Use a factor tree. Show your work.

• 2² x 3⁴

• 2⁴ x 3²

• 2³ x 3³

• 2⁴ x 3³