Least Common Multiple (LCM) of 140 and 80
The least common multiple (LCM) of 140 and 80 is 560.
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 140 and 80?
First, calculate the GCD of 140 and 80 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 140 ÷ 80 = 1 remainder 60 |
| 2 | 80 ÷ 60 = 1 remainder 20 |
| 3 | 60 ÷ 20 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 21 and 66 | 462 |
| 61 and 44 | 2684 |
| 15 and 153 | 765 |
| 115 and 40 | 920 |
| 182 and 128 | 11648 |