1. Multiple: counting by a number
Least Common Multiple:
Less than 12, LISTING Method
LCM of 4 & 6
LCM of 12 & 8

2. LCM
Ladder Method
For numbers greater than 12
LCM of 18 & 24
LCM of 36 & 45

3. U-TRY
LCM
10 & 12
28 & 42

4. Examples:
LCM
6 & & 18
9 & & 20

5. Two faucets are dripping
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?

6. On October 2nd, Sydney and Lisa are walking together
On October 2nd, Sydney and Lisa are 
walking together. Sydney walks every 6 days and Lisa walks every 8 
days. On what date will they walk on the 
same day again?

7. Find the LCM:
& 9
& 36
3. 3 & 5
4. 9 & 54
& 13
6. John and Corey are cutting their grass today. John cuts his grass every 8 days, Corey cuts his every 12 days. In how many days will they be cutting grass on the same day?