《小学数学教学大纲》指出:“在四则运算中,笔算是重点,口算是基础。”口算教学意义重大,好处很多。 (一) 口算有利于集中学生注意力学生进行四则运算,解答应用题都离不开口算。口算练习时,学生需要高度集中注意力,看清和听清所要口算的具体内容,牢记口算的数字,理解数量关系,考虑和选择口算的方法。因此口算教学有利于集中学生的注意力,促使学生积极思维,聚精会神地参 The Primary School Mathematics Syllabus states: “In the four arithmetic operations, pen calculation is the key point and word calculation is the basis.” Teaching in oral arithmetic is of great significance and has many benefits. (A) Mouth count is conducive to students focus on students to conduct four operations, answer application questions are inseparable from the mouth count. Mouth arithmetic, students need a high degree of concentration, to see and hear the specific content of the mouth to mouth count, keep in mind the figures, understand the relationship between quantity, consider and choose the method of mouth calculation. Therefore, oral arithmetic is conducive to the concentration of students' attention, prompting students to actively think, attentively to participate