Least Common Multiple (LCM) of 198 and 40
The least common multiple (LCM) of 198 and 40 is 3960.
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 198 and 40?
First, calculate the GCD of 198 and 40 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 198 ÷ 40 = 4 remainder 38 |
| 2 | 40 ÷ 38 = 1 remainder 2 |
| 3 | 38 ÷ 2 = 19 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 172 and 82 | 7052 |
| 183 and 98 | 17934 |
| 64 and 200 | 1600 |
| 43 and 49 | 2107 |
| 100 and 99 | 9900 |