Least Common Multiple (LCM) of 30 and 27
The least common multiple (LCM) of 30 and 27 is 270.
What is the Least Common Multiple (LCM)?
The LCM of two integers is the smallest positive integer that is divisible by both numbers. It is often used to find common denominators and solve problems involving periodic events.
Formula for LCM
The LCM of two numbers can be calculated using their GCD:
LCM(a, b) = |a × b| ÷ GCD(a, b)
How to Calculate the LCM of 30 and 27?
First, calculate the GCD of 30 and 27 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 30 ÷ 27 = 1 remainder 3 |
| 2 | 27 ÷ 3 = 9 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 180 and 160 | 1440 |
| 195 and 40 | 1560 |
| 121 and 178 | 21538 |
| 193 and 35 | 6755 |
| 151 and 33 | 4983 |