Download MATH By Aadam Muhammeed

HCF AND LCM
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The true father of maths
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HCF - Highest Common Factor
The highest common factor of two numbers is the largest number that is a
factor of both of them
The HCF of 12 and 18 is 6.
To find the HCF of two numbers:
•List all the factors of each number (factor tree)
•Identity the largest factor that is in both lists
For examples:
Factors of 18={1,2,3,6,9,18}
Factors of 24={1,2,3,4,6,8,12,24}
HCF of 18 and 24=6
LCM- Lowest Common Multiple
The lowest common multiple is the smallest number that is a multiple of
both of them.
The LCM of 18 and 24= 72
To find the LCM of two numbers:
•List the few multiples of each other
•Identify the smallest multiple that is in both lists
For example:
Multiples of 18= 18,36,54,72,90
Multiples of 24= 24,48,72,96
LCM of 18 and 24= 72
By Aadam Muhammed™