Greatest Common Factor Using Factor Trees

The video tutorial explains how to find the greatest common factor (GCF) of 16 and 8 using factor trees. It begins with an introduction to the concept and the method, followed by step-by-step creation of factor trees for both numbers. The tutorial then demonstrates how to organize the prime factors in a chart and apply the rule of using vertical pairs to find the GCF. The video concludes with a summary of the process and a call to action for viewers to subscribe for more educational content.

What is the purpose of using a factor tree in finding the greatest common factor?

• To identify the largest number

• To break down numbers into their prime factors

• To multiply numbers together

• To add numbers together

Which of the following is a prime factor of 16?

• 8

• 2

• 4

• 16

How many times does the number 2 appear as a prime factor in the factor tree of 16?

• 1

• 2

• 3

• 4

What is the first step in creating a factor tree for the number 8?

• Divide by 8

• Divide by 2

• Divide by 4

• Divide by 3

How many prime factors does the number 8 have in its factor tree?

• 2

• 4

• 1

• 3

What is the rule for selecting prime numbers to find the GCF?

• Use all pairs

• Use vertical pairs

• Use diagonal pairs

• Use horizontal pairs

What is the greatest common factor of 16 and 8?

• 4

• 2

• 8

• 6