What is the method for converting imperial into metric?
It all depends on what imperial measurement you want to convert
to metric e.g. if you want to convert 10 km into miles, this is the
method:
You have to memorise the fact that 5 miles is approx 8 km.
Therefore 10 miles is double the number of km.
So, (5 x 2 = 10) 10 miles is 8 x 2 = 16 km.
Now, if you want to find out how many miles is 2.5 km (5/2 =
2.5), divide 8 by 2 = 4. So 2.5 km = approx 4 miles.