LCM
Introduction
LCM is very important in life. the full form of LCM is Least Common Multiple.
What is LCM
LCM is the smallest non-zero number that is a multiple of 2
or more numbers.
LCM- Least Common Multiple
Where do we use LCM in our daily lives
- about an event that is or will be repeating over and over?
- to purchase or get multiple items to have enough.
- to figure out when something will happen again at the same time.
Finding LCM
Method 1: The common division method
Find LCM of 12,18.
- list down the two numbers as shown below.
- Then pick the smallest prime number that is at least divisible by one of the numbers (12 or 18)
- then divide the numbers and write the quotient
- Repat this the same process. until you have the quotients as 1.
Remember: If a number can not be divided by the prime number just write the same number in the next line too.
- Now we have to multiply all the prime numbers and the product will be the LCM.
Method 2: division method
Find LCM of 12,18.
- list down the two numbers as shown below.
- Then pick the smallest prime number that is divisible by both the numbers.
- repeat step 2 until there is no common prime number that divides both the numbers.
- Now multiply all prime numbers and the numbers that do not have common prime numbers as shown below.
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