What is the lcm for 6 and 30?

Answer 1

First, factor the numbers into primes.

30=2*3*5

6=2*3

Then line up the prime factors.

2 2

3 3

5

Multiply them together. Use the pairs only once.

2*3*5=30

lcm(6, 30) = 30

Answer 2

The least common multiple (LCM) for 6 and 30 is 30.