1. Least Common Multiples

2. What is the LCM of 2 and 6? Multiples of 2: 2,4, ,8,10,12,14,16… 6
2,4, ,8,10,12,14,16… 6
Multiples of 6: 6
,12,18,24,30,36,42…
Least Common Multiple: 6
The LCM of 2 and 6 is 6

3. What is the LCM of 2 and 8? 2,4,6, ,10,12,14,16,18,… 8 Multiples of 2:
2,4,6, ,10,12,14,16,18,… 8
Multiples of 2:
Multiples of 8:
,16,24,32,40,48,56,… 8
Least Common Multiple: 8
The LCM of 2 and 8 is 8

4. What is the LCM of 8 and 20? Multiples of 8: 8,16,24,32, ,48,56,64… 40
8,16,24,32, ,48,56,64… 40
Multiples of 20:
20, ,60,80,100,120… 40
Least Common Multiple: 40
The LCM of 8 and 20 is 40

5. What is the LCM of 4 and 9? Multiples of 4: 4,8,12,16,20,24,28,32,36
9,18,27,36,45,54,63…
Least Common Multiple: 36
The LCM of 4 and 9 is 36