In this lesson, the student will learn how to find the GCF of 3 numbers. The process is very similar to finding the greatest common factor of two numbers, and we'll get practice here to master this skill.
First, we list each of the three numbers. Next, we list the factors of the three numbers, taking care not to skip over any factors. Then, we look in each of the lists to find the largest factor that is common to all three of the lists. This is the greatest common factor (GCF).
The concept of the GCF can be applied to as many numbers as needed for the problem at hand.