To do this, you need to split the numbers into their prime factors:
18 = 2x3x3
12 = 2x2x3
The next step is to identify any common prime factors between the two numbers. In this case both numbers have a 2 and a 3 as prime factors. Multiply these together, and we get:
2x3 = 6. Therefore the HCF of 18 and 12 is 6.
3
The HCF of 12 and 60 is 12
The GCF is 12.
The GCF is 2.
3
The HCF of 40 & 12 is... 4
The hcf of 12 & 36 is 12
the HCF is 6
9= 3x3 12= 2x2x2x2x3 HCF = 3
The GCF is 12.
The GCF is 12.
The GCF is 3.