The Workbook series as the name suggests has been designed by Arihant with an aim of helping students practice the concepts using hundreds of practice questions of all types which have been or may be asked in the upcoming CBSE Examinations. It is a practice book aimed at mastering the concepts and acquiring comprehensive knowledge about the varied types of questions asked in CBSE Class1 st Mathematics Examination. The present workbook for CBSE Class 1 st Mathematics Examination has been divided into 13 chapters namely Shapes & Space, Numbers from One to Nine, Addition, Subtraction, Numbers from Ten to Twenty, Time, Measurement, Numbers from Twenty-one to Fifty, Data Handling, Patterns, Numbers, Money and How Many, each containing ample number of practice questions which have been designed on the lines of questions asked in previous years' CBSE Class 1 st Mathematics Examination. Each chapter in the book contains ample number of practice questions which have been designed on the lines of questions asked in previous years' CBSE Class 1 st Mathematics Examination. The varied types of practice questions will make sure that the students get an insight into the kind of questions asked in the CBSE Class 1 st Mathematics Examination. This book is strictly based on NCERT and complements it by providing practice to help reinforce the material given in each chapter of NCERT. As the book contains ample number of examination pattern based practice questions, it for sure will act as perfect practice workbook for the upcoming CBSE Class 1 st Mathematics Examination.