Least Common Multiple (LCM) of 18 and 100
The least common multiple (LCM) of 18 and 100 is 900.
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 100?
First, calculate the GCD of 18 and 100 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 18 ÷ 100 = 0 remainder 18 |
| 2 | 100 ÷ 18 = 5 remainder 10 |
| 3 | 18 ÷ 10 = 1 remainder 8 |
| 4 | 10 ÷ 8 = 1 remainder 2 |
| 5 | 8 ÷ 2 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 157 and 193 | 30301 |
| 67 and 42 | 2814 |
| 120 and 158 | 9480 |
| 123 and 192 | 7872 |
| 73 and 68 | 4964 |