1. Dual mode training, you can practice according to the number of questions, or you can challenge your own limits.
2. Fun learning APP, making oral calculation exercises more fun and efficient.
3. Learning medals, awarding medals according to the learning situation, improving children's sense of accomplishment and self-confidence.
4. According to the syllabus, the mixed operations of all grades of primary school are designed.
5. Support [Number Key Answer] and [Option Answer]
6. Wrong book and historical record function, record and track the learning situation in time, and check for deficiencies.
7. Draft calculation.
8. No ads.
If you have any questions, you can contact us by email, we look forward to your comments or criticism: