The problems between the first-grade mathematics and the first-grade mathematics are relatively easy to hand over, and children can be helped to understand by graphic methods, that is, mathematical thinking. For example, there are six people in this team. Xiaoming ranks second and Xiaohong ranks sixth. How many people are there between Xiaoming and Xiaohong? At this time, we use graphical method to check Xiao Ming and Xiao Hong respectively. It is easy to understand that Xiaohong and Xiaoming are separated by 345, that is, three people. The correct formula is 6-2 minus 1, which is equal to 3.

There are many problems between the first-grade application problems. Parents can draw pictures for their children to make them easier to understand. There is a fixed formula between general problems, that is, the previous number MINUS the last number, and then MINUS one. For example, Xiao Ming ranks second and Xiao Hong ranks thirteenth. How many people are there between Xiaoming and Xiaohong? At this time, the answer is Xiaohong minus Xiaoming, minus one.