i am going in nith standard and want a subject which helps me in the feid of buissness

no subject can be called worthless if you want to join a business. actually the choice of subjects depends upon the type and capacity of business you want to join. if you want to join as employee you should prefer maths, economics, accountancy etc. if you want to join as enterprenaur, hr and public

at the moment sonny you have to study all of five subjects- ie maths,science,social science, english and one more language. you can also have a sixth subject, later on take commerce with maths