“小数乘整数”是苏教版小学数学五年级上册第五单元第一课时的教学内容,学生在学习本内容之前已经学习了整数的四则运算、认识了小数的意义、会计算小数的加减法。在教学过程中,大部分老师都是让学生根据题目直接列出小数乘整数的算式,然后将小数乘整数转化成整数乘整数来计算,在后续的学习过程中,通过练习形成计算技能。这样的教学过程,学生仅仅知道了小数乘整数可以转化成整数乘整数, “Fractional integral ” is the teaching content of the first lesson of the fifth unit of the fifth grade of the Supian version of elementary school, students have learned the four arithmetic of integer before learning the content, recognize the meaning of the decimal, will calculate the decimal Addition and Subtraction. During the teaching process, most of the teachers make students directly formulate the arithmetic of fractional numbers according to the subject, and then convert the decimal numbers into integers by integers to calculate. In the subsequent learning process, the calculation skills are formed through practice. This teaching process, students only know the fractional integer can be converted into an integer by an integer,