Is the Vedic Mathematic is Useful to solve Maths questions in modern mathematics studies ?/

Yes Vedic mathematics is very useful to solve question related to mathematics in modern age because Vedic maths is the basic source of the modern Maths that we are studying.
You will get many easy tricks to solve the problems by going through vedic maths. It will also improve your calculation power.

Vedic Mathematics books :

Vedic Mathematics For Schools (Book 3) PB New Ed Edition
Author: James T. Glover



Vedic Mathematics: 1 [Paperback]
Jagadguru Swami Sri Bharati Krishna Tirthaji Maharaja (Author)