1. Greatest Common Factor
using the cake method

2. What is the smallest prime
number that goes
into both 6 and 8?
Now divide both
6 and 8 by the 2
GCF of 6 and 8 2 6 8
What is the smallest prime
number that goes into
both 3 and 4? 3 4
GCF: 2
Nothing? Then slash
out bottom
and multiply the
numbers on the side to
get the GCF.
You will divide out any common prime factors of the two numbers

3. 2 24 60 2 12 30 3 6 15 2 5 GCF GCF: 2x2x3=12 prime # that
What’s the smallest
prime number that
goes into
24 and 60?
Is there another
prime # that
goes into both
12 and 30?
GCF 2 24 60
How about
6 and 15? 2 12 30
Anything
else? 3 6 15
GCF:
2x2x3=12 2 5
No?
Slash out the
bottom. Then multiply
the side.

4. pg. 164 examples b,c,d

5. pg. 166 practice #1,2

6. A gardener has 27 pansies and 36 daisies
A gardener has 27 pansies and 36 daisies. He plants an equal number of each type of flower in each row. What is the greatest number of flowers per row?
p. 167 #9

7. Homework: Solve the following problems in your math journal:
Find the greatest common factor of: 15 and and and and and and and and 28