The worksheets are ideally designed to bridge the gap between textbook and practice, making them particularly suitable for the phase of in-depth practice as well as for internal and external differentiation—whether your students are learning individually, in pairs, or in groups. The tasks are organized into three levels of difficulty. Additionally, the competency assignments make it easier for you to select appropriate tasks. All tasks and solutions are also included in an editable format on the accompanying CD, allowing you to create customized exercises for your students. All tasks have been successfully tested in practice. Tests on each topic facilitate your lesson preparation and can be used by teachers and students to assess learning progress. The topics include: factors and multiples, fractions, multiplication and division of fractions, addition and subtraction of fractions.