Least common multiple facts for kids
The least common multiple of two integers is the smallest positive integer between all the multiples of both. It is usually denoted by LCM(a, b). Likewise, the LCM of more than two integers is the smallest positive integer that is divisible by each of them.
A multiple of a number is the product of that number and an integer. For example, 10 is a multiple of 5 because 5 × 2 = 10, so 10 is divisible by 5 and 2. Because 10 is the smallest positive integer that is divisible by both 5 and 2, it is the least common multiple of 5 and 2. By the same principle, 10 is the least common multiple of −5 and 2 as well.
Relation with the greatest common divisor
It is known that:
This formula is often used to compute the LCD, once known the GCD of a and b.
Least common multiple Facts for Kids. Kiddle Encyclopedia.