Mammoth Memory

Lowest common multiple (LCM)

We know         Lowest = Smallest number

Common = Anything the same

  Multiple = Multiplcation table

 

Multiple here is short for
Multiplication tables 

So logically

Lowest common multiple is

LCM - The smallest number
                     what they have in common
                   from multiplication tables

Example 1

What is the lowest common multiple of the two numbers 3 and 4?

 

Lowest common multiple:

  1. The smallest number
  2. What they have in common
  3. From multiplication tables

 

Multiplcation tables

Multiplication tables example 1.jpg

What they have in common are:

12 and 24

The smallest number is 12.

 

Answer:

The lowest common multiple of the two numbers 3 and 4 is 12.

 

Example 2

What is the lowest common multiple of the two numbers 6 and 8?

 

Lowest common multiple:

  1. The smallest number
  2. What they have in common
  3. From multiplication tables

 

Multiplcation tables

Multiplication tables example 2.jpg 

What they have in common are:

24 and 48

The smallest number is 24.

 

Answer:

The lowest common multiple of the two numbers 6 and 8 is 24.

 

Example 3

What is the lowest common multiple of the two numbers 18 and 12?

 

Lowest common multiple:

  1. The smallest number
  2. What they have in common
  3. From multiplication tables

 

Multiplcation tables

Multiplication tables example 3b.jpg

What they have in common is:

36 and 72

The smallest number is 36.

 

Answer:

The lowest common multiple of the two numbers 18 and 12 is 36.

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