Prime Factorization

What number is never allowed in a factor tree? 

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

Tags

CCSS.6.EE.A.1

A prime number

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

Tags

CCSS.4.OA.B.4

Is 5 prime or composite? 

• Prime
• Composite

Tags

CCSS.4.OA.B.4

Use a factor tree to find the prime factorization of 33

• 33

• 11x3

• 10x3

• 3x3x3x2

Use a factor tree to find the prime factorization of 42

• 4x4x3

• 6x7

• 7x3x2

• 5x4x2

Tags

CCSS.4.OA.B.4

What is a factor?

• Two numbers that create a quotient.

• Two numbers that create a product.

• Two numbers that create a sum.

• Two numbers that create a difference.

Tags

CCSS.4.OA.B.4

A composite number ...

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

Tags

CCSS.4.OA.B.4

A prime number...

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

Tags

CCSS.4.OA.B.4

Is 12, a prime or composite number? 

• Prime
• Composite

Tags

CCSS.4.OA.B.4

Is 17, a prime or composite number? 

• Prime
• Composite

Tags

CCSS.4.OA.B.4