The schoolbook "Mathematics 5th Grade" by Lük offers fundamental exercises with natural numbers specifically designed for fifth graders. It is a revised classic aimed at providing students with a solid foundation in mathematics. The content is clearly structured and promotes understanding of mathematical concepts through targeted exercises. The book consists of 32 pages and is written in German. With a handy format of 23 cm in height and 15 cm in width, it is ideal for use in the classroom as well as for independent learning at home. Weighing 74 grams, it is also easy to transport. Written by authors Jürgen Borchers, Burghard Köchel, and Eckhard Rüger, this schoolbook is a valuable resource for mathematical education in the fifth grade and supports the development of skills essential for further educational pathways.