除数是两三位数的除法是在学习了除数是一位数除法和乘数是两三位数乘法的基础上学习的,是以后继续学习四则混合运算、小数除法以及应用题所必不可少的。除数是两三位数的除法是整数四则运算的重要组成部分。由于多位数的除法与两位数除多位数的方法基本相同,如果学生理解和掌握了两位数除多位数的方法,那么学生学习除数是三位数或者更多位数的除法就会较顺利。在这一单元的教学中,关键要让学生掌握试商的方法。 下面就试商教学中应注意的问题,谈一点自己 The divisor is a two or three digit division is learned after learning the divisor is a one-digit division and the multiplier is a two or three-digit multiplication, after which it is essential to continue studying four mixed arithmetic, fractional division, and applied questions of. Divisor division is a two-digit three-digit integer arithmetic operation is an important part. Since multi-digit division is basically the same as dividing a two-digit by a multiple digit, if the student understands and masters the double-digit-to-multi-digit method, then the student learns that division is a division of three or more digits Will be more smoothly. In this unit of teaching, the key for students to master the trial method. The following test operators should pay attention to teaching problems, talk about yourself