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selenalin3006
2 năm trước
a, 200 kg = .........tạ 705 kg = ........tạ..........kg 13 tấn 2 yến = ........kg b, 53 km =….m 12km 5m = …m 38000m = …km c, 3m2 = ..............dm2 560 000cm2 = ................m2 6m2 3275cm2 = ....cm2 d, 7 thế kỉ = .......năm 240 phút = ........giờ ngày =............giờ
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