Hi Sonam!!!

So you are now in 12th and want to get 80%+ in Cbse boards so there are few tips for you so that you can get 80%+ marks...

• Start clearing your basics actually board tests basics, For Maths solve ncert properly and than if you have enough grasp on ncert than solve R.D. sharma for more practice as ncert doesn't have enough questions for practicing also in November or December after completing your syllabus properly buy arihant's chapter wise collection of previous year papers as the book will give you idea about the examination and which type of question are asked and most of the time question of same pattern is asked and also solve ncert 23 times upto December and solve arihant chapterwise(previous year) 2-3 times too but in arihant I will suggest you to focus on important questions . Also, focus more in school as it will save time of your coaching,and clear your concepts well..
• Physics: This is an important subject as board does changes sometime in this so learn the concepts first for this Subject than try solving ncert questions including intext questions and derive the derivations on your own don't mug up derivations also solve numericals properly & keep reference book with you for physics which may be of pradeep's Modern ABC's and after completing your syllabus buy the arihant chapter wise collection of previous year questions and solve it 23 times and revise physics on a regular interval...

• Keep calm while studying take breaks in regular intervals.
• Make a proper study routine as the board demands the width of your knowledge so focus is needed for it.
• Discuss your doubts with friends and also never hesitate to ask you teachers.
• Eat properly and also sleep properly as a 7-8 hrs sleep will increase your productivity.

Hope this helps,If you are having any queries put it down in comment section I would be happy to help,do upvote the answer if it helped you..



Best of Luck for your Exams & Future!!!



Regards,

Rajdeep Sinha