# What is the LCM of 5 and 18?

LCM of 5 and 18 is the smallest number which divides both 5 and 18 exactly without a remainder.

## Answer: LCM of 5 and 18 is 90.

For 5 and 18, the smallest number which would be perfectly divisible by them is their LCM, which is 90.

Let us see how to calculate it below:

## Explanation:

Least Common Multiple is the smallest number that will divide 5 and 18 exactly.

### LCM of 5 and 18 using Common Division Method

Here we will divide both 5 and 18 concurrently with prime numbers until we don't have a prime number to further divide them.Product of the prime numbers used in dividing 5 and 18 is the LCM of 5 and 18.

### LCM of 5 and 18 by listing the common factors:

In this method, we list the first few multiples of 5 and 18 to identify their common multiples.

Multiples of 5= 5, 10,15, 20, 25, 30, 35, 40, 45, 50, 55, 60, **90**65, 70, 75, 80, 85, **90**,...

Multiples of 18= 18, 36, 54, 72, ,...

The least among the common multiples of 5 and 18 is 90. So the LCM of 5 and 18 is 90.