How to Calculate Lcm
What is Lcm?
The Least Common Multiple (LCM) is the smallest positive integer that is a multiple of both numbers. It is used for adding fractions (as the LCD) and solving scheduling problems.
Step-by-Step Guide
- 1Find the GCF(a, b) first
- 2LCM(a, b) = (a × b) ÷ GCF(a, b)
Worked Examples
Input
LCM(4, 6)
Result
12
GCF=2, LCM=24÷2=12
Input
LCM(12, 15)
Result
60
GCF=3, LCM=180÷3=60