Factors and Multiples

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 number is a factor of 6?

• 12
• 2
• 8
• 10

Tags

CCSS.4.OA.B.4

Which number is prime?

• 9
• 5
• 15
• 1

Tags

CCSS.4.OA.B.4

Which number is a composite number?

• 10
• 5
• 7

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

Which is a NOT a factor of 9?

• 0
• 1
• 3
• 9

Tags

CCSS.4.OA.B.4

Which is a prime number?

• 15
• 17
• 21
• 39

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