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What is LCM

4 years ago

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505 Replies

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I

Iftikhar


please explain it briefly

505 Answers

S
Sudha Davarakonda

LCM stands for Least Common Multiple.

It’s the smallest number that is a multiple of two or more numbers.

Example:

Find the LCM of 4 and 5:

Multiples of 4: 4, 8, 12, 16, 20...

Multiples of 5: 5, 10, 15, 20, 25...

The least common multiple is 20.

R
Rosine

LCM stands for the Lowest Common Multiple. This is the number that is a multiple for all the numbers given (ie can be found in the times table for all the numbers given). For example, if the numbers given is 3 and 6, the lowest common multiple for them both is 12 as that is the first number that can be found which is a multiple of both of them

H
Hannah T

The answer is Least Common multiple.


The LCM of two or more numbers is the smallest number that is evenly divisible by all numbers in the set.


For example:


By prime factorisation method, we can write 8 and 10 as the product of prime numbers, such that;

8 = 2 × 2 × 2 

10 = 2 × 5

LCM (8, 10) = 2 × 2 × 2 × 5 = 40


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LCM stands for Lowest Common Multiple for two or more numbers in Maths. For example, to find the LCM of number 6 and 4, we can

step1: write down the multiples of each number from the smallest onwards

step2: find out the first number that is a multiple of both numbers


So you working will be like this:

Multiples of 4: 4, 8, 12, 16, 20, 24...

Multiples of 6: 6, 12, 18, 24...


As you can see, numbers 12, 24 and propably more if we write down more occured in above lists and they are all the common multiples of 4 and 6. Among all these, 12 is the smallest or lowest, so

12 is the lowest Common Multiple of 4 and 6, that is to say

LCM of 4 and 6 = 12



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Abdul R Profile Picture
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Masters graduate in Chemical Engineering

LCM stands for Lowest Common Multiple


For example,


Question: What is the lowest common multiple between (LCM) between 6 and 10 ?


Answer: 30


Explanation:

you have to find a number that is a multiple of 6 and 10 but it has to be a multiple of the two and the lowest value possible. So,


6 x 1 = 6 10 x 1 = 10

6 x 2 = 12 10 x 2 = 20

6 x 3 = 18 10 x 3 = 30

6 x 4 = 24 10 x 4 = 40

6 x 5 = 30 10 x 5 = 50


From the timestable you can see that 30 is the lowest common multiple between 6 and 10. 60 is also a multiple if you continue the timestable but that is not the lowest value. Therefore, its important you always take the lowest value



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P
Prachi G

LCM stands for Least Common Multiple. It's the smallest multiple that two or more numbers have in common. For example, the LCM of 4 and 6 is 12 because it's the smallest number that both 4 and 6 can divide evenly into.

Z
Zoya M

The LCM (Least Common Multiple) of two numbers is the smallest number that both can divide evenly.

For example, to find the LCM of 4 and 5:

  • Multiples of 4: 4, 8, 12, 16, 20, ...
  • Multiples of 5: 5, 10, 15, 20, ...

The smallest common number is 20, so the LCM of 4 and 5 is 20.

R
Rishu

LCM is least common multiple. For example; LCM of 5 and 15 is 15.

J
Jordan Selig

LCM is the Lowest Common Multiple of 2 numbers. That means the lowest number that appears in both their times tables.


Some examples - what's the LCM of 2 and 3? Well, 6 is in BOTH the 2x table (2x3) and 3x table. (3x2)

Whats the LCM of 8 and 12? 24 is in both the 8x table (8x3) and the 12x table (12x2).


I'd work it out by writing down the 1st 5 numbers in both times tables (that's usually enough) and circling the numbers they both share. The lowest of the numbers you circle = the LCM.


M
Mathieu D

LCM means Least Common multiple or factor. It is also the multiple of any two or more given integers. For example: LCM of 16 and 20 will be 2 X 2 X 2 X 2 X 5 = 80. Where 80 is the smallest common multiple for numbers 16 and 20.

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Lowest Common Multiple! An LCM between two numbers is the smallest number that is a multiple of both. For example, between 6 and 7, the LCM would be 42, as this is the smallest number that is a multiple of both!

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K
Karan Pandya

It is simply the smallest of the common multiples.

For Example, what is LCM of 3 and 5?

The multiples of 3 are 3, 6, 9, 12, 15, 18, ...

The multiples of 5 are 5, 10, 15, 20, 25, ...

Find the first Common (same) value which is 15

So the Least Common Multiple of 3 and 5 is 15

S
Sudip B

LCM stands for lowest common multiple. LCM is a number which can be divisible by a set of numbers. For example, 12 is the LCM of 1, 2, 3, 4, 6 and 12. This means 12 can be divided exactly by 1, 2, 3, 4, 6, and 12 itself.

R
Ruksana K

Least common multiples..

example- LCM of two numbers is divisible by both numbers. For example, the LCM of 6 and 8 is 24. Hence 24 is divisible by both 6 and 8.

M
Morgan Hynes

LCM is the lowest common multiple of a variety of numbers. For example, the LCM (lowest common multiple) of 3 and 12 is 12.

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