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vokhacdiuy
2 năm trước
Viết phân số thích hợp vào chỗ chấm: 2m2 = dam2 15m2 = dam2 6dam2 = hm2 34dam2 = hm2 4hm2 = km2 27hm2 = km2 9mm2 = cm2 56mm2 = cm2
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