Factors, Prime and Composite Numbers

Which number is a factor of 10

• 3
• 4
• 5
• 8

Tags

CCSS.4.OA.B.4

Which number is a factor of 18

• 4
• 7
• 6
• 12

Tags

CCSS.4.OA.B.4

Which number is a factor of 21

• 8
• 9
• 6
• 3

Tags

CCSS.4.OA.B.4

Which number is a factor of 24

• 9
• 7
• 11
• 12

Tags

CCSS.4.OA.B.4

Which number is a factor of 16

• 7
• 6
• 9
• 4

Tags

CCSS.4.OA.B.4

Which set of numbers show all the factors for 15?

• 7, 8
• 1, 15
• 1, 3, 5, 15
• 3, 5, 15

Tags

CCSS.4.OA.B.4

Which choice lists all the factors for the number 24?

• 2, 3, 4, 6, 8, 12, 24
• 2, 3, 4, 6, 8, 12, 24, 36
• 1, 2, 3, 4, 6, 8, 12, 24
• 1, 2, 4, 5, 6, 8, 12 ,24

Tags

CCSS.4.OA.B.4

The only factors of 9 are 1 and 9 making the number 9 prime.

• True
• False

Which number is NOT prime?

• 3
• 7
• 17
• 21

Tags

CCSS.4.OA.B.4

Which number is prime?

• 9
• 5
• 15
• 1