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hn3060358
2 năm trước
câu1: 42,15+7,82. ; 62,84-15,95. ; 43,4×2,3. ; 78,612:12 câu2: tìm x: (X-3,2)×1,2=470,04 câu 3 : 16,4km=??? m. ; 0,25km=???m. ; 9543mm=???m câu 4: nêu quy tắc tính diên tích hình tròn. câu 5: tính diên tích hình tròn có bán kính 1,5 m tiếng việt: câu1 :phân tích cấu tạo của câu ghép sau: Nó kéo dài cổ ra mà hót ,nó muốn các bạn xa gần đau đó lắng nghe.
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