Hey, Opt for Oswaal Books Question bank. They have a unique layout, precise and updated content. It includes previous years question papers with solutions in toppers own handwriting. They have Mind Maps, HOTS & Value based questions. It also gives answers as per CBSE marking scheme. Also, Chapterwise/ Topicwise presentation are given for systematic and methodical study. This books is designed to assist students to prepare for their periodic tests, internal assignments as well as the Board examinations with equal ease.
The only thing to score good marks in Maths is to PRACTICE, PRACTICE and PRACTICE.
Good Luck!