“分数、小数加减混合运算”是九年义务教育五年制小学数学教材第九册的内容，是小学阶段数学计算中的难点。教学中，我以学生自学为主，从学生“学”出发，让学生自己在展示知识的过程中，掌握新知识，取得了显著的教学效果。下面谈点管见：一、发现问题，尝试解决学起于思， “Fractional, Decimal Addition and Subtraction Mixed Operations” is the ninth volume of the compulsory education five-year primary school mathematics textbook, which is a difficult point in the elementary school mathematics calculation. Teaching, I self-learning students, from the students “learning”, so that students in the process of displaying knowledge, master new knowledge, and achieved remarkable teaching results. Talk about the following point to see: First, identify problems, try to solve Learning from thinking,