For children aged six or seven, it is really difficult to understand such a problem! Even adults should think calmly! The main reason is that there is no "basic number" (Taobao stamps have no specific number).

It is suggested to use line segments to represent quantity. In order to make it easier to understand, you can change the topic slightly to the height of three people, so that children can sort out more intuitively that A is less than the "same amount" (intermediate amount) and B is greater than the same amount (intermediate amount). So who is more than A and who is less than B, and how much is the difference? Guide children to understand step by step.