Least Common Multiple (LCM) of 25 and 70
The least common multiple (LCM) of 25 and 70 is 350.
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 25 and 70?
First, calculate the GCD of 25 and 70 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 25 ÷ 70 = 0 remainder 25 |
| 2 | 70 ÷ 25 = 2 remainder 20 |
| 3 | 25 ÷ 20 = 1 remainder 5 |
| 4 | 20 ÷ 5 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 114 and 79 | 9006 |
| 185 and 180 | 6660 |
| 77 and 116 | 8932 |
| 110 and 142 | 7810 |
| 17 and 168 | 2856 |