This book is prepared as a textbook for the course Basic mathematics both for the teacher and students in order to deliver the course uniformly. Upon completion of the course, students will develop further concepts in mathematics providing a foundation for studies in a number of other areas of Mathematics and related fields. The main text in this book is organized into four chapters and covers the concepts. Each chapter is provided with appropriate examples and exercise that elaborates the concepts, principles and theorems presented. In this book, all the concepts are explained in a better and interesting way with constructive examples in which students can easily understand and motivate themselves to do by their own selves.