Show him the actual calculation with props (candy bars, toys, etc.). ), and then let him use props to calculate.

(1) The most likely problem is the intelligence of the child. At present, many children's brains develop late and their intelligence grows slowly, so many corresponding companies have developed many high-efficiency and high-quality early education products. Children can use their right brain to develop a treasure house.

(2) The poor quality of the school and the poor teaching ability of teachers are also some factors, or you can find an enlightenment teacher to give your children an enlightenment class.