Prime Factorization, GCF, LCM and Factoring

Select each number that is prime

• 2

• 5

• 9

• 13

• 17

Tags

CCSS.4.OA.B.4

Select each number that is composite

• 20

• 21

• 29

• 33

• 35

Tags

CCSS.4.OA.B.4

What is the prime factorization of 24?

• 2 x 2 x 2 x 3

• 2 x 4 x 3

• 2 x 2 x 6

• 2 x 2 x 2 x 3 x 3

What is the prime factorization of 42?

• 2 x 3 x 7

• 2 x 2 x 3 x 7

• 2 x 3 x 5

• 6 x 7

What is the greatest common factor of 20 and 48?

• 4

• 2

• 8

• 16

What is the greatest common factor of 35 and 56?

• 5

• 6

• 7

• 4

What is the least common multiple of 12 and 10?

• 48

• 60

• 50

• 36

What is the least common multiple of 7 and 15?

• 70

• 105

• 49

• 84

Factor the expression:

6 + 24

• 2(3 + 12)

• 6(1 + 8)

• 6(1 + 4)

• 3(2 + 8)

Tags

CCSS.6.NS.B.4

Factor the expression:

12 - 40

• 2(6 - 20)

• 6(2 - 8)

• 12(1 - 4)

• 4(3 - 10)

Tags

CCSS.6.NS.B.4