There are multiplication and division methods in the second grade mathematics of Tianjin primary school. The content of mathematics teaching in the second grade of Tianjin primary school includes multiplication and division. Grade two students began to learn the basic concepts of multiplication and division, and carried out simple multiplication and division operations. They will learn to use the multiplication table, understand that multiplication is a shortcut to repeated addition, and start multiplication and division of one digit. In addition, they will learn the basic terms and concepts of multiplication and division, such as multiplication symbol, multiplication expression, division symbol, dividend, divisor and quotient.