一、缘起:作业检查中发现问题在一次小学三年级数学调研测试中,一个班级的数学计算题引起了我的注意。题目:在()里填上“>”“<”或“=”。320×5(>)15003×124(=)124×3185×4(<)8000×250(<)0+250学生在计算时,一般都是在算式下面写上结果然后再比较大小,几乎所有的学生都用这种方法来计算。从正确率上讲,这种做法无可厚非,但是从长远 First, the origin: Problems found in job inspections In a third grade mathematics research test, a class of mathematical problems has caught my attention. Title: Type “” “” < “or ” = "in (). 320 × 5 () 15003 × 124 (=) 124 × 3185 × 4 (<) 8000 × 250 (<) 0 + 250 Students in the calculation are generally written in the formula below the results and then the size of almost all Students use this method to calculate. Speaking from the correct rate, this practice is understandable, but in the long run