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How about oral math treasure?
The effect is very good.

1, just 1 second, one beat, all oral corrections are solved, which is a necessary and very good helper for teachers, parents and students to check their homework quickly.

2. The topic covers many types in primary school, with high recognition accuracy, so don't worry about mistakes and omissions.

3, support one-click printing, solve the offline practice scene, practice if you want, not limited by the environment.