前几天,听了一位教师教学解比例,练习有这样一道题:把3×40=8×15改写成比例。学生根据比例的基本性质很快说出了:(1)3:8=15:40 (2)8:40=3:15 (3)15:3=40:8 (4)40:15=8:3 接着,这位老师问怎样改写容易时,有一位学生很自信地说:老师。先将题中的四个数按照从小到大或从大到小的顺序排列。再添上比号和等于号就可以了。此时,其他学生或许因为 A few days ago, listening to a teacher teaching solution ratio, practice has such a problem: the 3 × 40 = 8 × 15 rewritten as a proportion. According to the basic nature of the ratio, the student quickly states: (1) 3: 8 = 15:40 (2) 8:40 = 3: 15 (3) 15: 3 = 40: 8 (4) 40: 15 = 8 : 3 Then, when the teacher asked how to rewrite easily, one of the students confidently said: Teacher. The first four questions in the title in ascending order or descending order. Add more than the number and equal to the number on it. At this point, other students perhaps because