2 4 Common Factors or Common Multiples NOTES.notebook
September 01, 2015
Page 73 Answers
2.4 Bell Work
20
6
12
1
What are these two
numbers called???
The numbers do not share any other common
factors.
Sep 1­7:41 AM
Aug 25­3:14 PM
Finding the GCF using the distributive property
Distributive Property:
24 + 36
write an equivalent expression to 6 + 10 using the GCF and the distributive property.
24
36
6 + 10
24 + 36 (12 x 2) + (12 x 3)
12(2 + 3)
There are no more common factors!
Aug 29­2:36 PM
Aug 29­2:46 PM
Find the GCF using the distributive property.
Using your blank piece of paper, find the GCF
27 + 18
of these numbers using the distributive
property.
1) 10 + 16 = 2 (5 + 8)
2) 18 + 42 = 6 (3 + 7)
3) 54 + 45 = 9 (6 + 5)
4) 36 + 60 + 24 = 12(3 + 5 + 2)
Aug 22­10:41 PM
Aug 29­3:16 PM
1
2 4 Common Factors or Common Multiples NOTES.notebook
Finding GCF & LCM using prime
factorization
28
32
September 01, 2015
On a blank piece of lined paper, find
the GCF & LCM of these numbers using
prime factorization.
1) 20 and 8
2) 12 and 21
LCM= 40 GCF=4
LCM= 84 GCF=3
3) 15, 20, 30 (USE ANY METHOD!)
4) 30, 45, 60 (USE ANY METHOD!)
Aug 29­3:31 PM
Aug 29­3:17 PM
Page 78
r
Mo
LC ?
F
GC
Jun 1­8:43 AM
LCM or GCF?
Aug 29­3:23 PM
Jun 5­11:00 PM
Page 79
Homework­ page 1 & 2 use any method!
Aug 29­3:20 PM
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2 4 Common Factors or Common Multiples NOTES.notebook
Aug 29­3:22 PM
September 01, 2015
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Aug 31­7:16 AM
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