1. Worksheets and Practice Books:
- Worksheets and practice books are a great way to reinforce concepts learned in the textbook. They provide additional exercises and problems for students to practice and apply their knowledge.
- These materials usually include a variety of question types such as multiple-choice, fill in the blanks, word problems, and puzzles, which help students develop problem-solving skills.
- Worksheets and practice books can be found in bookstores or online platforms like EduRev, which offer a wide range of resources specifically designed for CBSE students.

2. Reference Guides:
- Reference guides provide concise summaries of the topics covered in the textbook. They include key formulas, definitions, and examples to help students revise and review the concepts.
- These guides also often provide tips and tricks to solve mathematical problems more efficiently and quickly.
- Reference guides can serve as handy companions to the textbook, especially during revision or exam preparation.

3. Online Resources:
- Online platforms like EduRev offer a variety of supplementary materials for CBSE students, including videos, interactive quizzes, and practice tests.
- These resources provide visual and interactive explanations of concepts, making learning more engaging and effective.
- Online resources also offer the flexibility to access materials anytime and anywhere, allowing students to learn at their own pace.

4. Teacher's Guides:
- Teacher's guides are valuable resources for both teachers and students. They provide additional explanations, teaching strategies, and activities to enhance learning in the classroom.
- Teachers can use these guides to plan lessons, create engaging activities, and assess students' understanding of the concepts.
- Students can also refer to the teacher's guides for extra practice or to clarify any doubts they may have.

5. Previous Year Question Papers:
- Previous year question papers are a valuable resource for exam preparation. They give students an idea of the question pattern, marking scheme, and the level of difficulty of the exams.
- Solving these papers helps students familiarize themselves with the exam format, identify their strengths and weaknesses, and practice time management.
- Previous year question papers can be found in bookstores or online platforms, providing students with ample practice opportunities.

In conclusion, there are several supplementary materials available to accompany the CBSE Class 5 mathematics textbook. These materials include worksheets, practice books, reference guides, online resources, teacher's guides, and previous year question papers. Utilizing these supplementary materials can enhance students' understanding, practice, and exam preparation. Platforms like EduRev provide a wide range of these resources, ensuring students have access to quality supplementary materials for their CBSE mathematics studies.