Preparing for the Mathematics section of the CTET exam requires a thorough understanding of the concepts and a strong foundation in mathematics. Here are some suggested books that can help you in your preparation:

1. "Quantitative Aptitude for Competitive Examinations" by R.S. Aggarwal:
This book covers a wide range of topics, including number system, arithmetic, algebra, geometry, trigonometry, and data interpretation. It provides comprehensive explanations and a large number of practice questions to enhance your problem-solving skills.

2. "Mathematics for CTET: Paper I & II" by RPH Editorial Board:
Specifically designed for the CTET exam, this book covers all the topics as per the latest syllabus. It includes chapter-wise theory, solved examples, and practice questions. The book also provides previous year question papers for practice and self-assessment.

3. "CTET & TETs for Class I-V Mathematics & Pedagogy" by Arihant Experts:
This book focuses on both the content and pedagogy of mathematics. It covers all the topics with a special emphasis on child development and pedagogical aspects of teaching mathematics. It also includes solved question papers and practice sets for thorough preparation.

4. "Mathematics Classes 1-8" by Ravi Raj Suman:
This book is specifically designed for CTET and other teaching exams. It covers all the basic concepts of mathematics from classes 1 to 8. It includes detailed theory, examples, and practice questions to reinforce the understanding of the topics.

5. "Child Development and Pedagogy" by R Gupta:
Although not solely focused on mathematics, this book is essential for the CTET exam as it covers the child development and pedagogical aspects of teaching. It helps in understanding the learning difficulties of children and effective teaching methodologies.

6. "CTET Mathematics & Pedagogy" by Pearson:
This book provides a comprehensive coverage of mathematics and pedagogy for the CTET exam. It includes detailed explanations, examples, and practice questions. It also offers pedagogical insights and strategies for effective teaching.

It is important to note that while these books can be helpful in your preparation, it is equally important to practice solving previous year question papers and mock tests. This will help you familiarize yourself with the exam pattern and improve your time-management skills. Additionally, you can also refer to online resources and educational websites, like EduRev, for additional study material and practice questions.