Toán Lớp 5: 5mm=5/1000m=…m ; 3g=3/1000kg=…kg; 6kg=6/1000 tấn =…tấn
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Toán Lớp 5: 5mm=5/1000m=…m ; 3g=3/1000kg=…kg; 6kg=6/1000 tấn =…tấn
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