The same story again: After the summer holidays, hardly any student can remember how to calculate terms and equations. When introducing a new topic, you often find that the basics of mathematics are not mastered. Even in higher grades, there is often a lack of fundamental mathematical skills. With our "Basics Math" series, we provide you with very simple and immediately usable worksheets for effective review of basic mathematical skills. The basics are explained so simply and clearly that every student can understand and internalize them – and even do so independently. Each phenomenon is first explained using the simplest case, followed by a second example and a word problem with practical relevance. On the practice page, tasks with increasing difficulty are then offered. The progression.