Today you'll be taking a break from the madness of our Chapter 4 test and working on something a little easier.
Let's talk about GCF. GCF is the "greatest common factor" of two numbers (remember, a "factor" is a number that goes into another number evenly).
You can find the GCF of two numbers using a couple different methods. Today, we will be using the listing method ONLY. Here is an example:
Example:
Find the GCF of 30 and
18.
If we list the factors of
30, we get: 1, 2, 3, 5, 6, 10, 15, and 30.
If we list the factors of
18, we get: 1, 2, 3, 6, 9, and 18.
When we compare the two
lists, we see that the greatest common factor shared by both of them is
6.
Read through Example 1 on your packet, skip Example 2, and complete 1 - 12. IGNORE THE DIRECTIONS ON THE PAGE AND USE ONLYYYYYY THE LISTING METHOD! We will be covering the other method next time. Then, SKIP the second page of the packet and complete the math puzzle with NO calculators. Turn in whatever you finish.
Have a math-tabulous day!!!
