Prime, Composite Numbers & Prime Factorization

Is 3 a factor of 12?

• yes
• no

Tags

CCSS.4.OA.B.4

which of the following is not a prime number?

• 41

• 43

• 45

• 47

Tags

CCSS.4.OA.B.4

Which of the following is a prime number?

• 72

• 73

• 74

• 75

Tags

CCSS.4.OA.B.4

The factors of 65.

• 1, 3, 5

• 1, 5, 13, 65

• 1, 3, 5, 65

• 1, 3, 5, ,13, 65

Tags

CCSS.4.OA.B.4

Prime factors of 75.

• 3, 5, 15

• 3, 5

• 3

• 5

Prime factorization of 80.

• 2 x 4 x 10

• 2 x 2 x 2 x 5

• 2 x 2 x 2 x 2 x 5

• 2 x 2 x 2 x 5 x 5

What is a prime number?

• A number with 1 factor
• A number with 2 factors
• A number with 3 factors
• 2 factors (1 and itself)

Tags

CCSS.4.OA.B.4

Factors of 15.

• 1,3,5,15

• 1,3,5,10,15

Tags

CCSS.4.OA.B.4

Factors of 63.

• 1, 3, 7, 9, 21, 63

• 1, 3, 7, 9, 31, 63

Tags

CCSS.4.OA.B.4

Prime factors of 42.

• 2, 3

• 2, 7

• 2, 3, 5

• 2, 3, 7