Least Common Multiple (LCM) of 80 and 120
The least common multiple (LCM) of 80 and 120 is 240.
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 80 and 120?
First, calculate the GCD of 80 and 120 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 80 ÷ 120 = 0 remainder 80 |
| 2 | 120 ÷ 80 = 1 remainder 40 |
| 3 | 80 ÷ 40 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 116 and 43 | 4988 |
| 18 and 70 | 630 |
| 123 and 63 | 2583 |
| 189 and 51 | 3213 |
| 102 and 156 | 2652 |