6th Grade Math Ch. 6 Test Review

Which of the following numbers is a prime number?

• 15

• 29

• 35

• 51

What is the prime factorization of 60?

Using a factor tree, find the prime factorization of 72.

What is the greatest common factor (GCF) of 48 and 64?

• 16

• 32

• 8

• 4

What is the least common multiple (LCM) of 6 and 8?

• 24

• 48

• 12

• 36

What is the prime factorization of 45?

Which of the following numbers is not a prime number?

• 17

• 23

• 27

• 31

What is the least common multiple (LCM) of 5 and 7?

• 35

• 70

• 14

• 28

What is the prime factorization of 36?

What is the greatest common factor (GCF) of 24 and 36?

• 12

• 6

• 24

• 18