- Math
- Giới thiệu phân số
- Age 8-9
-
level: 3
- Vietnamese
คำแนะนำของผู้เขียน
Giới thiệu phân số, phân số bằng nhau
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M3B-Bài 9-PBT1
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คำแนะนำของผู้เขียน
Giới thiệu phân số, phân số bằng nhau