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xinchaotoilaphuong
2 năm trước
a/ 15,3 x 1,9 + 3,5 x 15,3 + 15,3 x 3,6 + 15,3 b/ 25,8 x 1,02 – 25,8 x 1,01. c/ 1,47 x 3,6 + 1,47 x 6,4 Bài 2: Tìm một số biết 25% của nó bằng 100 Bài 3: Tính chu vi và diện tích của hình tròn có đường kính 3,6 dm.
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