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Activity Book Composite Mathematics-3 is a comprehensive book for students studying in schools affiliated to the Central Board of Secondary Education. The book comprises of chapters on addition, subtraction, multiplication, division, fractions, time, calendar and geometry. In addition, the book consists of several solved and unsolved questions for thorough practice and revision. This book is essential for standard III students studying in CBSE-affiliated schools. About the Authors R. S. Aggarwal is an Indian author, engineer, and finance expert. He has also authored A Modern Approach To Logical Reasoning, Non Verbal Reasoning, A Modern Approach To Verbal Reasoning, Quantitative Aptitude, and many more examination guides. He completed a B.E. degree in Chemical Engineering and began his career in 1965. Since then, he has held several posts in various companies. Among his many positions are Head of Infrastructure Finance Department and Project Appraisal Department of IDBI, numerous other positions in IDBI, industrial experience in a leading paper mill and currently, Director of Niryat-Sam Apparels. Aggarwal also possess a diploma in Boiler Operation Engineering. Vikas Aggarwal is an Indian author who authored many books along with R.S. Aggarwal. Vikas has written some other popular books like Mental Mathematics - 5, Composite Mathematics Book 4, and Objective General English.