If you are going to the first grade this year, and you can't add and subtract single digits, it will be a little difficult for you to go to the first grade. Even if you don't like the current preschool teaching progress, you should add and subtract single digits. When you were in grade one, you can't catch up now, because everyone can.

You can teach children to keep large numbers in mind, and then put out decimal numbers by hand and count them. There are only a few ways. It is important for children to practice more and establish such a reaction, and children will naturally get started.

For example: 5+8=? You should put the big number 8 in your heart, put the decimal number 5 in by hand, and then count the numbers 5,9, 10,1,12, 13 with the big number 8 in your heart. This problem is equal to 13.