1.
multiplication
2.
Division
3.
one
4.
fountain
5.
Load and weight
6.
Picture graph

① You can organize the contents of the textbook and understand the concepts through simple verification problems related to it.
② You can build a solid foundation by solving problems by type at the textbook + practice book level.
③ You can gain confidence by solving problems that often appear on school exams and new trend problems.
④ You can check and improve your skills in preparation for high-difficulty school exams and intra-school competitions.
⑤ You can improve your logical thinking and application skills by solving problems of the highest difficulty level, thereby taking your skills to the next level.
⑥ By completing a unit, you can comprehensively check your skills, including descriptive writing.