Least Common Multiple (LCM) of 100 and 70
The least common multiple (LCM) of 100 and 70 is 700.
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 100 and 70?
First, calculate the GCD of 100 and 70 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 100 ÷ 70 = 1 remainder 30 |
| 2 | 70 ÷ 30 = 2 remainder 10 |
| 3 | 30 ÷ 10 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 76 and 10 | 380 |
| 190 and 33 | 6270 |
| 186 and 65 | 12090 |
| 138 and 141 | 6486 |
| 174 and 20 | 1740 |