Prime factorization

Is 5 prime or composite? 

• Prime
• Composite

A prime number

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

All of these are prime except

• 3
• 9
• 2
• 13

A composite number

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

One is 

• prime
• composite
• not prime or composite
• the loneliest number that you'll ever do

What number is never allowed in a factor tree? 

• 13 (it's bad luck!)
• 1 
• 8675309
• 2

What are the prime factors of 30? 

• 3, 2, 5 
• 1, 2, 3, 5, 6, 15, 30
• 3, 30
• 10, 3

Using a Factor Tree, find the prime factorization of 24. 

• 2³ x 3
• 2² x 3 x 4
• 2³ x 3
• 3 x 8

Tags

CCSS.6.EE.A.1

CCSS.6.EE.A.4

Using a Factor Tree, find the prime factorization of 18. 

• 9 x 2
• 3 x 2²
• 3² x 2
• 3³

Tags

CCSS.4.OA.B.4

Using a Factor Tree, find the prime factorization of 75.  

• 5² x 3
• 5 x 5 x 3
• 3² x 5
• 15 x 5