GCF LCM Prime Factorization

What is the prime factorization of 18?

• 2 x 9

• 2 x 2 x 3

• 3 x 6

• 2 x 3 x 3

What is the Least Common Multiple (LCM) of 6 & 9?

• 3

• 6

• 9

• 18

What is the GCF of 42 and 24?

• 3

• 6

• 2

• 4

The prime factorization of 24 is....

• 2x2x6

• 2x2x2x3

• 3x8

• 2x3x4

Find the Least Common Multiple (LCM) of 5 and 7.

• 35

• 70

• 12

• 14

The LCM of two numbers will always be bigger than both of the numbers.

• True

• False

If two numbers have a GCF of 1, you multiply them together to find the LCM.

• True

• False

The GCF of 2 numbers will either be one of the numbers or will be smaller than both the numbers.

• True

• False

Which is the prime factorization of 81?

• 9 x 9

• 3 x 3 x 9

• 3 x 3 x 3 x 3

• 3 x 3

Thomas typed the prime factorization of 8 as 1 x 2 x 2 x 2. What did he do incorrectly?

• He didn't do anything wrong.

• The product is not 16.

• You cannot write the prime factorization with the number 1.

• Thomas is perfect.