6th Grade Review

What is the prime factorization of:

60

• 2 x 2 x 3 x 6

• 2 x 3 x 5

• 2 x 2 x 3 x 5

• 2 x 3 x 2 x 5

What is the prime factorization of:

90

• 2 x 3 x 3 x 5

• 3 x 3 x 10

• 2 x 5 x 9

• 3 x 3 x 5

What is the prime factorization of:

45

• 3 x 5 x 3

• 3 x 3 x 5

• 5 x 9

• 2 x 3 x 7.5

What is the prime factorization of:

100

• 2 x 2 x 5 x 5

• 2 x 5 x 10

• 10 x 10

• 2 x 2 x 25

What is the greatest common factor of:

24 and 40

• 4
• 8
• 12
• 16

What is the greatest common factor of:

36 and 48

• 4

• 6

• 12

• 18

What is the least common multiple of:

30 and 40

• 80
• 100
• 150
• 120

What is the least common multiple of:

20 and 45

• 90

• 180

• 200

• 360

• 19/24
• 21/24
• 17/24
• 3/14

Select all of the prime numbers.

• 3

• 9

• 29

• 2