Lowest common multiple (LCM)
We know Lowest = Smallest number
Common = Anything the same
Multiple = Multiplication table
Multiple here is short for
Multiplication tables
So logically
Lowest common multiple is
LCM - The smallest number
that 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:
- The smallest number
- What they have in common
- From multiplication tables
Multiplcation tables
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:
- The smallest number
- What they have in common
- From multiplication tables
Multiplcation tables
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:
- The smallest number
- What they have in common
- From multiplication tables
Multiplcation tables
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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