5.OA.2 Prime Factorization

Write 36 as the product of it's prime factors...

• 2 x 2 x 3 x 3 x 3

• 2 x 2 x 2 x 3

• 2² x 3²

• 2² x 3

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

Use a factor tree to find the prime factorization of 45

• 3² x 5

• 3 x 5 x 4

• 3 x 2 x 8

• 9 x 5

Which group are ALL prime numbers?

• 1,2,3,4,5

• 2,4,6,8,10

• 2,3,5,7,11,13

• 2,3,5,7,9,11

Tags

CCSS.4.OA.B.4

Use a number tree to find the prime factorization of 42

• 4x4x3

• 6x7

• 2x3x7

• 5x4x2

Use a number tree to find the prime factorization of 18

• 3x2x2

• 3x3x3

• 33x3

• 2x3x3

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

Which of the following is NOT prime?

• 29

• 23

• 17

• 39

Tags

CCSS.4.OA.B.4

Which is the prime factorization of 12 ? 

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