Example: 30 and 42
List the multiples.
30, 60, 90, 120, 150, 180, 210
42, 84, 126, 168, 210
Once you hit the same number, you've found the LCM.
You can list the multiples or use prime factorization.
List the multiples.6, 12, 18, 249, 18, 27The LCM is 18.
List the multiples of 324 and whatever the other number is. The first number that appears on both lists is the LCM.
find the LCM of each pair by listing multiples 5,6,7
By making of table of their values, and when you find a multiple that matches, that's the LCM. The answer is 24
You can list the multiples or use prime factorization.
List the multiples.4, 8, 12, 1612, 24The LCM is 12.
You can list the multiples. The LCM of 4 and 6 is 12.4: 4, 8, 12, 166: 6, 12, 18
List the multiples.6, 12, 18, 249, 18, 27The LCM is 18.
List the multiples of 324 and whatever the other number is. The first number that appears on both lists is the LCM.
find the LCM of each pair by listing multiples 5,6,7
All numbers have multiples. Some numbers have some of the same multiples as other numbers. These are known as common multiples. On the list of common multiples, one number is the smallest. This is the least common multiple.
Example: 5 and 7 List the multiples of 5. 5, 10, 15, 20, 25, 30, 35, 40... List the multiples of 7. 7, 14, 21, 28, 35, 42... The LCM is the first number that appears on both lists.
By comparing its multiples to another set of multiples.
By comparing its multiples to the multiples of another number.
List the multiples.5, 10, 1510, 20The LCM is 10.
LCM = 30