“甲比乙多多少、乙比甲少多少”这个问题,由于“多少”的含义不同,可分为:“已知甲乙两个数,求甲比乙多几,乙比甲少几”,“已知甲乙两数,求甲比乙多几分之几(百分之几),乙比甲少几分之几(或百分之几)”以及“已知甲比乙多几分之几,求乙比甲少几分之几”等类型。小学生容易把前两种搞混淆,而对于后一种,则感到困难大。在教学中,可借助直观图形,多让学生进行观 “A few more than a B, B less than a small number of” the problem, due to the “different” of the meaning of different, can be divided into: “A known number of two B, and more than a few B, B less than a few” “Knowing both A and B, how many percent (A few percent), A few less than the number of B (or a few percent)” and “A bit more than the known B A few, begging B less than a few ”and other types. Pupils easily confuse the first two, but for the latter, it is difficult. In teaching, with the help of visual graphics, let students make more observations