This highly acclaimed reference textbook by Dr. R.D. Sharma is specifically tailored for students studying mathematics in Class 9 under the CBSE curriculum. Published by Dhanpat Rai Publications, the book serves as a vital academic companion that simplifies fundamental mathematical concepts—such as number systems, polynomials, geometry, and mensuration—into easily digestible sections. It is widely recognized for its structured pedagogical design, offering thorough theoretical summaries, a vast array of step-by-step solved illustrative examples, and meticulously graded practice exercises that include multiple-choice questions (MCQs) to build deep conceptual clarity and strong problem-solving skills for school exams and foundational competitive tests.