“和、差、积、商”是数的四则运算的结果,“加、减、乘、除”是解决实际问题的方法。新课标教材没有对“和、差、积、商”进行详细的阐述,教师应在平时的教学实践中努力使学生建立清晰的“和、差、积、商”概念,以帮助学生加深对相关数学问题的理解,以便熟练地解决数学问题。 “And, difference, product, quotient ” is the result of four operations of numbers, “addition, subtraction, multiplication and division ” is the way to solve practical problems. The new curriculum standard textbook does not elaborate on “and, difference, plot, quotient”, teachers should try their best to make students clear the concept of “and, difference, product, quotient” To help students to deepen their understanding of mathematical problems in order to skillfully solve mathematical problems.