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phanthihongnhungqucb
2 năm trước
Câu 1:A) Tìm y biết: Y x 8 + y : 0,4 = 7/4 - 1/2 b) Tính bằng cách thuận tiện: 3,7 x 3,8 + 3,7 x 2,6 + 7,4 x 1,8 Câu 2: Viết số thích hợp vào chỗ trống: 3124 m3 =.....................dm3
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