What are the ways to practice questions for children's mental arithmetic?

Parents can ask their children questions in their leisure time according to their children's stage of learning and what they are learning, so that their children can make progress and improve in mental arithmetic. Parents can look at their children's textbooks to see how they are progressing, and they can also talk to their math teacher.

1. It is very difficult for children to sit still and they need their parents to review and practice after class, otherwise they will not be able to keep up with the lessons. The close connection of the course is very strong, the last class did not master, the next class can not keep up with the formation of a vicious circle.

2. Children who have learned to add and subtract will find it difficult to get rid of the original mathematical concepts, and to imagine the abacus for bead calculations. This will bring great disadvantage to the learning of beads, in doing simple arithmetic parents will not be able to figure out whether he has an abacus in the mind in the end. And when it comes to adding and subtracting, it's too late to know that he doesn't have an abacus in his mind, or to use his past experience to do the math.