This workbook contains some activity sheets and reference worksheets suitable for the students of Grade 4. It is also suitable for aspirants preparing for Olympiads and other such enrichment activities. Answer sheets with explanations are there in a separate sheet. It will enable parents and teachers for organizing the task in a better way. I am confident enough about the competence of fellow students having willingness to move up to the final stage of the Mathematics Enrichment Activities of various stages. There are different worksheets in accord to the time of studies that can be assigned to the fellow student. Answers are in a separate sheet paper that can be kept at different place. Parents and teachers use this book of activities to develop interest of students on mathematical as well as analytical skills.