Finding the Greatest Common Factor

Now that we now how to factor a number, we can look at pairs of numbers and determine whether they share any common factors. For those pairs that share common factors, we can look at the list and see what the largest shared factor is, and this is called the greatest common factor (GCF). Sometimes the two numbers only share one factor (1). When this is the case, we say the numbers are relatively prime.

Tonight's Homework: Lesson 4.2 ( 8 - 30, 36 - 39, and 44 - 45 )