Least Common Multiple (LCM) of 80 and 25
The least common multiple (LCM) of 80 and 25 is 400.
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 80 and 25?
First, calculate the GCD of 80 and 25 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 80 ÷ 25 = 3 remainder 5 |
| 2 | 25 ÷ 5 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 120 and 38 | 2280 |
| 20 and 151 | 3020 |
| 128 and 95 | 12160 |
| 80 and 21 | 1680 |
| 181 and 125 | 22625 |