Least Common Multiple (LCM) of 56 and 40
The least common multiple (LCM) of 56 and 40 is 280.
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 56 and 40?
First, calculate the GCD of 56 and 40 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 56 ÷ 40 = 1 remainder 16 |
| 2 | 40 ÷ 16 = 2 remainder 8 |
| 3 | 16 ÷ 8 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 118 and 58 | 3422 |
| 45 and 106 | 4770 |
| 126 and 114 | 2394 |
| 155 and 73 | 11315 |
| 181 and 43 | 7783 |