Transcript Least Common Multiple Day 3

Day 3 Warmup
1.
Find the GCF of 28 & 70
Andrew is making trail mix out of 48 bags of raisins and 32 bags of pretzels.
He wants each portion to be identical, containing the same items with nothing
left over.
2. What is the greatest number of portions he can make?
3. How much of each item (raisins & pretzels) will be in each portion?
Go
over Homework #1
Multiple: counting by a number
Least Common Multiple:
Less than 12, LISTING Method
LCM of 4 & 6
LCM of 12 & 8
LCM
Ladder Method
For numbers greater than 12
LCM of 18 & 24
LCM of 36 & 45
UTry
LCM
10 & 12
28 & 42
Examples:
LCM
6&7
(Neighbors)
9 & 10
5 & 20
6 & 18
LCM:
Three Numbers
*LIMITED
4 , 6 & 10
to only 2 numbers at a time*
9, 12 & 18
UTry:
6 , 12 , 30
6 , 8 , 10
Two faucets are dripping. One faucet drips every four seconds and
the other faucet drips every nine seconds. If a drop of water falls
from both faucets at the same time, how many seconds will it be
before you see the faucets drip at the same time again?
On October 2nd, Sydney, Jess, and Lisa are walking together.
Sydney walks every 6 days, Jess walks every 4 days, and Lisa
walks every 8 days. On what date will they all walk on the same
day again?
Homework # 2
Find
1.
6,9
2. 48 & 36
3. 3, 5
4. 9 & 54
5. 32 & 33
the LCM: