“加权平均数”应用题教学的误区邹小兰（乐安县实验小学）权平均数（即加权算术平均数）应用题是小学教学应用题教学的一个难点，作为统计平均数应用题的一种，其题型、解题规律和实际意义是独特的，在日常教学中一般不会误解。然而在某种特殊情况下，却也难免被曲解。如... Mistakes in the Teaching of “Weighted Average” Applied Questions Zou Xiaolan (Lean County Experimental Primary School) The weighted average (ie, the weighted arithmetic average) is a difficult point in the teaching of practical teaching in primary schools, and it is a kind of statistical average application problem. The type of questions, the law of problem solving and the actual meaning are unique, and they are generally not misunderstood in everyday teaching. However, under certain special circumstances, it is inevitably misinterpreted. Such as...