Can you beat a calculator when you calculate a number? This video shows you a simple math magic and tricks to beat a calculator easily. This is a simple way to calculate 4-digit number. It is one of interactive magic and tricks videos by aB iNtErAcTiVe. Actually there is no magic about it, but with a math tricks, you can easily make a calculation of 4-digit number. Check it more to make you a math professor now :D.
