Finding Factors and GCF

This video tutorial explains how to find the greatest common factor (GCF) of two whole numbers less than or equal to 100. It begins with a review of vocabulary related to factors, followed by examples illustrating how factors work. The video then demonstrates how to use the GCF to solve real-world problems, such as grouping students or items. Viewers are guided through the process of finding the GCF using examples and are encouraged to practice with additional problems. The tutorial concludes with a summary of key concepts and encourages independent practice.

What is a factor of a number?

• A number that cannot be divided by any other number.

• A number that is always greater than the given number.

• A number that can be divided by another number without a remainder.

• A number that is always less than the given number.

Which of the following is a factor of 24?

• 5

• 6

• 7

• 8

What is the greatest common factor (GCF) of 12 and 18?

• 6

• 9

• 2

• 3

How many boys will be in each group if 12 boys are divided into the greatest number of groups?

• 2

• 1

• 3

• 4

In the classroom example, how many groups can be formed with the greatest number of students?

• 2

• 4

• 6

• 8

What is the GCF of 60 and 48?

• 6

• 8

• 10

• 12

How many hand warmers will be in each welcome kit if 60 hand warmers are divided equally?

• 3

• 4

• 5

• 6

How many foot warmers will be in each welcome kit if 48 foot warmers are divided equally?

• 4

• 3

• 5

• 2

What is the purpose of finding the greatest common factor in real-world problems?

• To find the smallest number of groupings.

• To find the greatest number of groupings.

• To find the average number of groupings.

• To find the total number of items.

What should you do after watching the video?

• Watch another video.

• Complete the independent work.

• Discuss with friends.

• Forget about the content.