All numbers have multiples. Some numbers have some of the same multiples as other numbers. These are known as common multiples. The smallest of these is known as the least common multiple. Common multiples of 3 and 4 include 12, 24, 36 and so on. The LCM of 3 and 4 is 12.
The first 3 common multiples of 4 and 5 are: 20, 40, and 60.
3, 6, 9 4, 8, 12 5, 10, 15 Common multiples include 60, 120, and 180.
The lowest common multiple of 4 and 15 is 60
A common multiple of 3 and 4 is a number which is a multiple of 3 and of 4. The first 3 common multiples of 3 and 4 are 12, 24, 36
To find the least common denominator, list the multiples of each denominator. The lowest one they have in common is the LCD.For example:2/3 and 3/4:The multiples of 3 are: 3, 6, 9, 12, 15, 18, 24...The multiples of 4 are: 4, 8, 12, 16, 20, 24...The common multiples are 12 and 24. Since 12 is the least, it is the LCM.
Multiples of 3: 3 6 9 12 15 18Multiples of 4: 4 8 12 16The lowest multiple that is common to both 3 and 4 is 12.
The first three multiples of 4 are 4, 8 and 12. For them to be common, they need to be compared to another set of multiples.
60 and its multiples
4, 8 and 12 are the first 3 common multiples of 2 and 4
3
The LCM is 15. The rest are 30, 45, 60, 75 and 90.