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letrongdat487
2 năm trước
Tính nhanh: 0,8 x 95 x 7 + 0,56 x 45 + 2,8 0,6 x 28 x 8 + 9,6 x 2 + 0,48 x 680 3,8 x 4,54 + 3,6 : 1,5 + 5,46 x 3,8 - 2,1 :1,5
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