Factors- Prime and Composite Numbers

Which of the following is a factor of 8?

• 3
• 5
• 4
• 7

Tags

CCSS.4.OA.B.4

Which is not a factor of 21?

• 1
• 3
• 6
• 7

Tags

CCSS.4.OA.B.4

Which number is a factor of 27?

• 7
• 8
• 9
• 5

Tags

CCSS.4.OA.B.4

Which are the factors of 14?

• 1,14
• 1, 2, 7, 14
• 2, 7

Tags

CCSS.4.OA.B.4

Which number is NOT a factor of 10?

• 1
• 2
• 3
• 5

Tags

CCSS.4.OA.B.4

What is the GCF (Greatest Common Factor) of 12 and 6?

• 1

• 6

• 2

• 3

GCF of 32 and 40

• 2
• 4
• 6
• 8

What is the GCF of 14 and 20

• 7

• 28

• 2

• 6

Which number is NOT prime?

• 3
• 7
• 17
• 21

Tags

CCSS.4.OA.B.4

What is the greatest common factor of 6 and 21?

• 6
• 2
• 3
• 7