This book which is suitable for students in high schools and students in colleges. It also serves as a useful tool for students who are preparing for entrance examinations into colleges and universities. The step by step explanations presented in the worked examples are easy to understand since care was taken to sufficiently explain salient points. Numerous exercises at the end of each chapter are intended to test students' understanding of the topic. Therefore students are presented with an effective means of self-assessment whereby they can determine their individual strengths and revision needs.The topics covered in this textbook include: Linear equation and equations with fractionsNumber basesStandard forms and approximationsLaws of indicesLaws and theories of logarithmsModular arithmeticChange of subject of formulaeVariationWord problems involving fractionsSimple interestCompound interestProportional divisionAverage and mixture, rateFraction Decimal PercentageRatio. Learners will find these topics well simplified, thereby making mathematics more interesting. A constructive overview of this mathematics textbook will be highly appreciated from buyers so as to give an overview to others who intend to purchase a copy of this book, and also to serve as a form of advice for the author when revising the book.