Select two numbers.
List their factors.
Write down the numbers that appear on both lists.
Choose the largest one.
That's the GCF.
The highest common is 2
Highest common factor is 7.
The Highest Common Factor is: 9
The Highest Common Factor is: 4
The highest common factor is 35.
The highest common factor is: 20
The highest common factor is 7.
The highest common factor is 7.
99 and 165's highest common factor is 33.
7The highest common factor is 7
The highest common factor is 3.
The highest common factor (HCF) is 12.