Bai 1. Dien so thich hop a) 3 kg 4 g = ..................... kg b) 3 kg 4 g = .....................kg c) 15 ta 4 kg = .......................ta d) 4dm 6 dm = ..........................dam e) 4 dam 6 dm = ......................... dam g) 4 dm 6 dm = ..............m .