Prime Factorization

Is 5 prime or composite? 

• Prime
• Composite

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 number

Tags

CCSS.4.OA.B.4

2 x 2 x 2 is the prime factorization of

• 6
• 12
• 22
• 8

Tags

CCSS.4.OA.B.4

Use a factor tree (or factor wedding cake) to find the prime factorization of 105

• 7x5x3

• 11x5x3

• 7x5x2x1

• 7x5x3x2

Use a factor tree (or factor wedding cake) to find the prime factorization of 60

• 5x3x2x2

• 7x6x5

• 5x3x3x2

• 7x5x4

Use a factor tree to find the prime factorization of 32

• 2x2x2x4

• 2x2x2x2x2

• 4x4x2

• 2x2x2x2x1

Tags

CCSS.4.OA.B.4

Use a factor tree (or factor wedding cake) to find the prime factorization of 42

• 4x4x3

• 6x7

• 7x3x2

• 5x4x2

Use a factor tree (or factor wedding cake) to find the prime factorization of 64

• 4x4x4

• 4x4x2x2

• 2x2x2x2x2x2

• 4x4x2x1

Use a factor tree (or factor wedding cake) to find the prime factorization of 33

• 33

• 11x3

• 10x3

• 3x3x3x2

Use a factor tree (or factor wedding cake) to find the prime factorization of 72

• 2x2x2x3x3

• 4x3x3x2

• 4x2x2x2x2