In light of the increasing emphasis on differentiation and independent learning, the number of assignments for students to work on independently has significantly risen. And all worksheets need to be checked – that's hardly manageable! This volume offers you motivating practice tasks that already contain the solutions – allowing students to deepen curriculum topics in a playful manner during independent work phases. You won’t have to worry about detailed checking, enabling you to focus on other areas! After completing the tasks, students can recognize for themselves whether they solved them correctly or not. A quick glance from you at the worksheet is enough to assess your students' learning progress. This makes the practice phase enjoyable for both students and teachers! The topics: Natural numbers.