The Calculation Tiger is a practice book that allows children to independently deepen and automate learned content - at school or at home. A reward system motivates them in this process. The "I can already do this" pages give children the opportunity to assess their math skills and self-evaluate. The "Tiger Training" is a motivating special page with self-assessment, where children can playfully reinforce what they have learned. The included answer booklet enables quick self-checking for the child. The Calculation Tiger is aligned with the "Math Tiger" but can also be used independently of any teaching materials.