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

Which is the prime factorization of 12? 

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

Tags

CCSS.6.EE.A.1

CCSS.6.EE.A.3

CCSS.6.EE.A.4

Which of the following are all prime numbers

• 2, 3, 6, 7, 9
• 2, 4, 8, 16
• 2, 3, 5, 7, 9
• 2, 3, 5, 7, 11

Tags

CCSS.4.OA.B.4

Which of these is NOT a factor of 36?

• 2
• 8
• 12
• 6

Tags

CCSS.4.OA.B.4

One is 

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

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

Find the prime factorization for 80

• 4² ⋅ 5

• 2⁴ ⋅ 5

• 2 ⋅ 2 ⋅ 2

• 8 ⋅ 5 ⋅ 2

Tags

CCSS.6.EE.A.1

Find the prime factorization of 150.

• 2³ x 3 x 5

• 2 x 5²

• 2 x 3 x 5²

• 5² x 6

Find the prime factorization of 72

• 2³ x 3²

• 2 x 3² x 4

• 2⁴ x 3³

• 2² x 6²

Tags

CCSS.6.EE.A.1

Find the prime factorization of 105

• 7x5x3

• 11x5x3

• 7x5x2x1

• 7x5x3x2