To be well-prepared for further mathematics lessons, students must understand and be able to confidently apply the procedures of written calculations. This material achieves that: Students are guided in small steps from a review of the multiplication table through semi-written calculation methods to written multiplication and division. Written multiplication with and without carrying, as well as division with and without place value conversion, are introduced in a step-by-step and easily understandable manner, and practiced with a variety of task formats.