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小数除法的余数问题是教学中的难点。例如0.07÷0.03,部分学生不能迅速地正确判断出该题的余数是1,0.1,还是0.01。针对这种情况,我在教学时,用实例说明小数除法的余数问题,效果很好。具体方法如下:先用日常生活中的实例作铺路,在教学时出了这样一道题目。小明到商店买橡皮,每块0.01元,0.74元可以买几块?学生很快地口算出来。说:“可以买18块,还余2分钱。”便提出怎样列竖式计算呢?学生讲,
The remainder of the decimal division is a difficult teaching point. For example, 0.07 ÷ 0.03, some students can not quickly and correctly determine the remainder of the question is 1,0.1, or 0.01. In view of this situation, when I was teaching, I explained the remainder of the decimal division with examples and worked well. Specific methods are as follows: First, use examples of daily life as a paving road, in teaching such a problem out. Xiao Ming to the store to buy rubber, each 0.01 yuan, 0.74 yuan can buy a few? Students quickly figure out. Said: “You can buy 18, but also 2 cents.” How to put out a vertical calculation? Students say,