Prime Factorisation

Use a number tree to find the prime factorization of 105

• 3 x 5 x 7

• 3 x 5 x 11

• 1 x 2 x 5 x 7

• 2 x 3 x 5 x 7

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

• 3 x 5²

• 3 x 5 x 5

• 3² x 5

• 5 x 15

Using a Factor Tree, find the prime factorization of 150.

• 2³ x 3 x 5

• 2 x 5²

• 2 x 3 x 5²

• 5² x 6

Using a Factor Tree, find the prime factorization of 54.

• 3² x 6

• 3³ x 2

• 2³ x 3

• 9 x 6

Use a number tree to find the prime factorization of 111

• 3 x 33

• 3 x 3 x 11

• 3 x 37

• 1 x 3 x 4 x 9

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

Create a factor tree and find the prime factorization for 80

• 2⁴⋅5

• 4²⋅5

• 2⋅2⋅2

• 8⋅5⋅2

Only 1 answer below could be correct for the prime factorization of a number. Which answer could be correct. 

• 4⋅2⋅5

• 2⋅3²⋅7

• 15²⋅7

• 7²⋅4²

Write 144 in prime factorization. Use a factor tree. Show your work.

• 2² x 3⁴

• 2⁴ x 3²

• 2³ x 3³

• 2⁴ x 3³

Write 76 in prime factorization. Use a factor tree. Show your work.

• 2² x 19

• 2 x 19²

• 2 x 19

• 2² x 19²