Highest Common Factors
What is the
highest common factor of each pair of numbers? You will probably want some paper to work
out on.
e.g. 48 and 60
| 48
= 2 x 24 48 = 2 x 2 x 12 48 = 2 x 2 x 2 x 6 48 = 2 x 2 x 2 x 2 x 3 |
60
= 2 x 30 60 = 2 x 2 x 15 60 = 2 x 2 x 3 x 5 |
The common
factors are 2, 2 and 3.
So the HCF of 48 and 60 is 2 x 2 x 3 = 12