在计算有余数的小数除法时，有些同学往往把余数答错。例如计算９．５÷３．１时，商３余０．２。在运算过程中，因除数和被除数的小数点向右移动一位，变成整数计算，有些同学便把余数０．２误认为余２。怎样才能正确判断余数呢？下面向同学们介绍五种方法。一、意义法被除数 When calculating the decimal division with remainder, some students tend to mistake the remainder. For example, when calculating 9.5 ÷ 3.1, the quotient is more than 0.2. In the process of operation, because the divisor and the dividend to the right of a decimal point, into an integer calculation, some students put the remainder of 0.2 mistaken for more than 2. How can we correctly judge the remainder? Here are five ways to introduce students. First, the meaning of law is divided