Least Common Multiple (LCM) of 50 and 90
The least common multiple (LCM) of 50 and 90 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 50 and 90?
First, calculate the GCD of 50 and 90 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 50 ÷ 90 = 0 remainder 50 |
| 2 | 90 ÷ 50 = 1 remainder 40 |
| 3 | 50 ÷ 40 = 1 remainder 10 |
| 4 | 40 ÷ 10 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 199 and 49 | 9751 |
| 149 and 18 | 2682 |
| 196 and 61 | 11956 |
| 38 and 96 | 1824 |
| 78 and 55 | 4290 |