Least Common Multiple (LCM) of 30 and 60
The least common multiple (LCM) of 30 and 60 is 60.
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 60?
First, calculate the GCD of 30 and 60 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 30 ÷ 60 = 0 remainder 30 |
| 2 | 60 ÷ 30 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 161 and 16 | 2576 |
| 42 and 77 | 462 |
| 48 and 152 | 912 |
| 156 and 49 | 7644 |
| 70 and 57 | 3990 |