Prime Factorization Concepts

This video tutorial from Moomoomath explains the concept of prime factorization using a factor tree. It demonstrates the prime factorization of the numbers 18 and 90, showing how to break them down into their prime components. The video concludes with a brief promotion of the channel, encouraging viewers to subscribe for daily math and science content.

What is the purpose of prime factorization?

• To find the sum of all prime numbers

• To determine which prime numbers multiply to form the original number

• To divide a number by its largest prime factor

• To convert a number into a decimal

Which of the following is a prime factor of 18?

• 4

• 6

• 2

• 8

What is the prime factorization of 18?

• 2 x 5 x 3

• 3 x 3 x 3

• 2 x 2 x 3

• 2 x 3 x 3

Which number is not a prime factor of 90?

• 2

• 3

• 5

• 7

What is the first step in finding the prime factorization of 90?

• Divide by 2

• Divide by 5

• Divide by 7

• Divide by 3

What is the complete prime factorization of 90?

• 2 x 3 x 3 x 5

• 2 x 2 x 3 x 5

• 3 x 3 x 3 x 5

• 2 x 5 x 5 x 3