Our new edition of Practice - Word problems presents another series of exercise books, the aim of which is to help pupils of the first grade of elementary school to practice and consolidate the knowledge acquired at school. It is intended for 2nd-5th grade students who need to review the material discussed in mathematics lessons or to practice more deeply the problematic parts of the curriculum. The tasks are clearly sorted by difficulty from easier to more complex. Children can check the correctness of the solution in the key at the end of the book. The exercise books are supplemented with funny illustrations by Petr Palma.