You must have a white paper and a black pen and you must have to write all the short text that I will explain in my class you can easily multiply any number by 19 you will also learn many things on of multiplication and division on my video you will easily multiply by 11 12 13 14 15 16 17 18 19 it will improve your calculation your calculation will be boost you like you will be boost your whole process of thinking from your brain will improve by my so please visit my master class of Vedic mathematics by which you can speak you can improve your speed to a human calculator I will not praise myself as a good teacher but I am praising myself as a simple teacher which will explain you all the concept of mathematics of Vedic mathematics in a very easy way will find the square of 1 to 1000 only a short tric only from one short tric I am not giving you many type of tricks I will give you only one take that will work on many numbersÂ