Finding Factors

Select ALL numbers divisible by 2.

• 3

• 35

• 44

• 12

Tags

CCSS.4.OA.B.4

Factors of 24 are:

• 1,2,3,4,5,5,6,8,12 and 24

• 1 and 24, 2 and 12, 3 and 8, 4 and 6

• 24 and 1 only

• 23 + 1

Tags

CCSS.4.OA.B.4

1,2,8 and 16 are all factors of 16. Which factor is missing

• 3
• 4
• 5
• 6

Tags

CCSS.4.OA.B.4

what numbers are the factors of 9?

• 9,18,27,36
• 1,2,9
• 1,3,9
• 0,1,3,9

Tags

CCSS.4.OA.B.4

Which number is a factor of 21

• 8
• 9
• 6
• 3

Tags

CCSS.4.OA.B.4

The only factors of 7 are 1 and 7 making the number 7 prime.

• True

• False

Tags

CCSS.4.OA.B.4

A prime number is...

• a number that has only one factor.
• a number that has at least two factors.
• a number that has more than two factors.
• a number that has only two factors.
  (1 and itself)

Four students each made a list of prime numbers.

Samka: 5, 7 17, 23

Yariana: 3, 5, 13, 17

Jonathan: 2, 3, 17, 19

Gabriel: 7, 11, 13, 21

Who made an error/mistake and included a composite number?

• Samka

• Yariana

• Jonathan

• Gabriel

Select all that are true.

• Prime numbers have more than two factors.

• Composite numbers have more than two factors.

• All even numbers are divisible by 2.

• 9 is a prime number

Which numbers below are NOT prime? Select all that apply.

• 7

• 4

• 2

• 12

Tags

CCSS.4.OA.B.4