Mathematics for elementary school: crosswords, kevords, encryption. Zelenko S. V.

The assignments of the collection allow you to repeat the main topics in mathematics for the elementary school course. Each topic gives a set of interesting exercises and tasks in the form of crosswords, encryptions and other puzzles, which in an entertaining form allow the student to fix the knowledge gained in the lessons, train the necessary computational skills, work out arithmetic skills. And all this without boring memorization and repetition.