妈妈对我说,这一册数学课本中,最重要的就是“除数是两位数的除法”这个单元,而且妈妈告诉我,在整个小学阶段,最难的计算也是这个部分。因为以后我们将要学到的小数的乘法和除法,其实和多位整数的乘法和除法道理是一样的。然后等到六年级的时候,学的分数的乘法和除法,其实是非常非常非常容易的。 Mom told me that the most important thing in this book is that “divisor is a two-digit division” and my mom told me that the hardest part of the calculation is this part of the whole elementary school. Because later we will have to learn the decimal multiplication and division, in fact, and multiples and multiples of the integer is the same reasoning. And then wait until the sixth grade, the multiplication and division of the school’s scores is actually very, very, very easy.