: The standard textbook used in many Russian schools, often accompanied by supplementary test books .
Several editions are used in schools or by parents for extra practice. Note that prices for vintage or imported editions can vary significantly: matematika uchebnik dlia chetvertogo klassa.zadachi
: Study of plane figures, angles, symmetry, and calculating area and perimeter. : The standard textbook used in many Russian
: For example, calculating the remaining coal after using of a 24-ton delivery. matematika uchebnik dlia chetvertogo klassa.zadachi