First of all, let us figure out what exactly is mental math. Today if you search the phrase “mental math” you will probably end up with millions of options. Not exactly that makes your life easy; instead it builds up and strengthens your curiosity. Put in simplest terms, mental math can be defined as calculations performed in your head – mentally – without help of any external device be it as simple as pen and paper or any modern day device such as calculator, computer or any other electronic gadget.
We humans perform mental mathematical calculations everyday, consciously and unconsciously. When you are driving you figure out when to apply brakes to bring the vehicle to stop before hitting something. You figure out time difference between east coast and west coast. But where we falter is at the simplest and most mundane of calculations. Go to a restaurant and figure out 18% gratuity.
Abacus Mental Mathematics
What is abacus mental mathematics? Origin of Abacus is highly disputed today, some say it originated in Mesopotamia and some claim to be in China. Over centuries, abacus has evolved in to various different forms and sizes. The...
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