What is LCM

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

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

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

In maths LCM is the lowest common multiple of two numbers.

If you have two numbers say 3 and 4 the LCM of these two numbers would be 12.

This can be explained by:

Multiples of 3 = 3,6,9,12,15,18...

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

The common multiples off 3 and 4 are 12,24 etc and the lowest of these common multiples is 12 hence the LCM is 12

This is the Lowest Common Multiple

LCM stands for Lowest Common Multiple. This means the smallest number that is in the times tables of a set of numbers. Eg.

What is the LCM of 5 and 14?

Write out the multiples of 5 and the multiples of 14 :

5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75

14, 28, 42, 56, 70, 84, 96

The smallest number that is in both is 70 so the LCM of 5 and 14 is 70.

I hope that helps.

As you practice more you will find shortcuts. In this example, if you had written the multiples of 14 first you should have been able to find the LCM without writing out the multiples of 5. How? All multiples of 5 end in 0 or 5. And the first multiple of 14 that meets that criteria is 70!

Lowest common multiple.

LCM is the lowest common multiple. Let's go step by step:

What does multiple mean?

This is jut basically the multiplication tables.

For example:

The multiples of 3 is 3, 6, 9, 12, 15, 18, 21, 24, 27

Multiples of 4 is 4, 8, 12, 16, 20, 24

So now back to the question. Say they ask you a question like this:

What is the LCM of 4 and 3?

First we write the multiples of 4 and 3 which is:

4 8 12 16 20 24 28 32

3 6 9 12 15 18 21 24 27

now we compare both the multiples and find what the common multiples are.

above you can see that 12 and 24 are common. But since LCM means the "lowest" common multiple, we have to select the lowest number which is 12.

12 is the LCM of 4 and 3.

Basically LCM is just writing down the multiples and then selecting the lowest common multiple between the numbers.

I hope this helped you out. For more help you can join my classes and we can clear off more doubts.

LCM stands for the lowest common multiple, for two or more numbers. The LCM of a and b is the smallest number that is divisble by both a and b. For example, the LCM of 4 and 10 is 20, as 20 is the lowest number that is divisible by both 4 and 10.

 the LCM of any two is the value that is evenly divisible by the two given number

Lowest Common Multiple

LCM is the lowest common multiple. In other words it’s the smallest possible multiple of 2 or more numbers. Hope that helps :)

Every number has multiples. The multiples of a number can be gotten by the continuous addition of that number to itself. E.G, the multiples of 3 are 3,6,9,12,15, ...etc.

LCM- Lowest/least common multiple

for any two numbers, their LCM is just the least of their multiples which they both have in common.

E.G 3 and 7- if you list out the multiples of 3 and 7, then it is seen that both of them have 21 as a common multiple, also note that there is no common multiple of 3 and 7 that is lower than 21. so LCM of 3 and 7 is 21

LCM refers to the "Lowest Common Multiple", you are looking for the lowest positive integer for which it appears in the times table of two or more numbers.

LCM stands for Lowest Common Multiple (of several given numbers). It is the smallest number that can be divided exactly by all the given numbers. For example, the LCM of 10, 12 and 15 is 60. We write each number out as a product of its prime factors and then find the product of the smallest list that contains all the products. When combining fractions we also write LCD to mean lowest common denominator, which is identified in exactly the same way:

With our example, we would write 10 = 2x5; 12 = 2x2x3 and 15 = 3x5. When we put these together we must have 2x2 (from the 12) x3 (from both the 12 and the 15) and x5 (from both the 10 and the 15), so we end up with 2x2x3x5. Practise with a few more, simple examples and you will quickly get the hang of it.

LCM is often mentioned in conjunction with HCF (Highest Common Factor), which we can talk about later.