Least Common Multiple (LCM) of 18 and 50
The least common multiple (LCM) of 18 and 50 is 450.
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 18 and 50?
First, calculate the GCD of 18 and 50 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 18 ÷ 50 = 0 remainder 18 |
| 2 | 50 ÷ 18 = 2 remainder 14 |
| 3 | 18 ÷ 14 = 1 remainder 4 |
| 4 | 14 ÷ 4 = 3 remainder 2 |
| 5 | 4 ÷ 2 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 88 and 199 | 17512 |
| 43 and 124 | 5332 |
| 170 and 32 | 2720 |
| 85 and 157 | 13345 |
| 157 and 161 | 25277 |