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学生在计算中经常出现错误,我们找出真正的原因,防患于未然,学生的计算能力就能得到很快的提高,展现更好的教学效果。一、口算不熟练20以内的加减,100以内的乘除口算是进行多位数四则计算的基础,也是分数四则和小数四则计算的基础。基础不牢、口算不熟,必然漏洞百出。可以看一道两位与三位数的乘法。583×75中共要进行6次乘法口算,8次加法口算,其中只要有一步出错,结果
Students often make mistakes in their calculations. When we find out the real reason and take preventive measures, we can quickly improve students’ computing abilities and show better teaching results. First, the mouth is not skilled Less than 20 additions and subtractions, multiplication and elimination within 100 is counted as the basis for multi-digit four calculations, but also the scores of four and four decimal basis. The foundation is not strong, miscalculation, inevitable loopholes. Can see a two-digit and three-digit multiplication. 583 × 75 CPC to carry out 6 times the multiplication operator, 8 additions account, as long as there is a step error, the result