Least Common Multiple (LCM)

The Least Common Multiple refers to the smallest possible number that is evenly divisible by a given pair or set of numbers. For example, the least common multiple of the numbers 2 and 3 is 6.

The easiest trick for finding the least common multiple of any series of numbers is to find the multiples of the largest number in the set, and find the first of those numbers that is evenly divisible by both of the other two numbers.

For the set 4, 10, and 25. Go through the multiples of 25 until one is evenly divisible by both 4 and 10. The first number that satisfies this is 100, so this is the least common multiple of this set of numbers.