Topic 7: Factors and Multiples

Which number is NOT prime?

• 3
• 7
• 17
• 21

Which number is not a factor of 24?

• 6
• 8
• 3
• 14

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

Which number is a composite number?

• 10
• 5
• 7

Tags

CCSS.4.OA.B.4

Factor of 40

• 1,2,4,5,8,12,14,40
• 1,2,3,4,5,8,10
• 1,2,4,5,8,10,20,40
• 1,2,4,5,6,7,8,9,10

Tags

CCSS.4.OA.B.4

Which number is prime?

• 9
• 5
• 15
• 1

Tags

CCSS.4.OA.B.4

Is 35 prime or composite?

• prime
• composite

Tags

CCSS.4.OA.B.4

Which is true about ALL prime numbers.

• They are all even.
• They are all odd.
• They have exactly two factors.
• They do not have any factors.

Tags

CCSS.4.OA.B.4

Composite numbers:

• Are always bigger than prime numbers
• Have more than 2 factors
• Have 2 pairs of factors
• Don't have factors

Tags

CCSS.4.OA.B.4