Vedic maths is based on sixteen sutra's or principles . Using Vedic maths Does not mean that you can use it for some time only but it is a use of principles which can be used for the life time . It helps us to solve calculations mentally with sufficient practice. In competitive exams where time is less and Questions are more vedic maths helps a lot. Many schools and colleges has vedic maths as a complete subject for the students to solve the questions easily and fast.