计算错误是形形色色、各种各样的,只要我们仔细分析一下,会发现一般有这样几个原因造成计算错误。 一、非智力因素发生的差错 有些错误是由于学生非智力因素造成计算粗心大意,在不知不觉中产生的。例如看错题目、写错数字,忘记写符号或得数。这类错误也称无意错误,一经教师提示,学生自己会发现并纠正。 二、短时记忆发生的差错 如进位退位加减法,学生经常该进位的忘记进位,该退位的忘记退位,有的学生并非没有掌握进位加法和退位减法的法则,而是由于短时记记能力比 Calculation error is all kinds, a variety of, as long as we carefully analyze, you will find that there are several general reasons for the calculation error. First, the error occurred non-intelligence Some mistakes are due to non-intelligence factors caused by calculations of carelessness, unknowingly generated. For example, the wrong title, the wrong number, forgot to write a symbol or count. This type of error is also known as an unintentional error. Once instructed by a teacher, the student will find and correct it. Second, short-term memory errors such as carry abatement Addition and Subtraction, students often carry the forgotten carry, the abdication forget to abdicate, and some students did not grasp the carry plus and abatement subtraction rule, but because of short-term notes Ability than