Least Common Multiple (LCM) of 40 and 100
The least common multiple (LCM) of 40 and 100 is 200.
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 40 and 100?
First, calculate the GCD of 40 and 100 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 40 ÷ 100 = 0 remainder 40 |
| 2 | 100 ÷ 40 = 2 remainder 20 |
| 3 | 40 ÷ 20 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 178 and 17 | 3026 |
| 151 and 111 | 16761 |
| 102 and 12 | 204 |
| 191 and 84 | 16044 |
| 30 and 38 | 570 |