Mental Math Tricks by Kevin OConnor - HTML preview

Converting Kilometres to Miles

This is a useful method for when travelling between imperial and metric countries and need to know what kilometres to miles are.

 

The formula to convert kilometres to miles is number of (kilometres / 8 ) X 5

 

So lets try 80 kilometres into miles

 

80/8 = 10

 

multiplied by 5 is 50 miles!

 

Another example

 

40 kilometres

 

40 / 8 = 5

 

5 X 5= 25 miles http://www.memorymentor.com/