Mastering Prime Factorization and Factor Trees

Susie introduces prime factorization, explaining it as writing a composite number as the product of its prime factors. She provides examples and non-examples, demonstrating the use of factor trees to find prime factors. The video concludes with practice problems and a vocabulary review, ensuring students understand key concepts like composite numbers, prime numbers, and factor trees.

What is the definition of prime factorization?

• Writing a number as a difference of its prime factors

• Writing a composite number as the sum of its factors

• Writing a number as a sum of its prime factors

• Writing a composite number as the product of its prime factors

Which of the following is a composite number?

• 3

• 2

• 18

• 5

Why is 1 * 6 not the prime factorization of 6?

• Because 6 is less than 1

• Because 1 is greater than 6

• Because 6 is a prime number

• Because 1 is not a prime number

Which of the following is NOT a prime factorization of 12?

• 2 * 6

• 2 * 2 * 3

• 3 * 4

• 1 * 12

What is the purpose of a factor tree?

• To find the sum of factors

• To find all the prime numbers in a number

• To find the difference between factors

• To find all the prime factors of a number

In a factor tree, what do you do when you find a prime number?

• Circle it

• Underline it

• Ignore it

• Cross it out

What is the prime factorization of 18 using a factor tree?

• 3 * 6

• 2 * 9

• 2 * 3 * 3

• 1 * 18

Which factor pair can be used to start a factor tree for 60?

• All of the above

• 2 * 30

• 3 * 20

• 4 * 15

What is the prime factorization of 88?

• 1 * 88

• 2 * 4 * 11

• 2 * 2 * 2 * 11

• 8 * 11

Which of the following is a prime number?

• 11

• 6

• 4

• 9