Question

Tính (theo mẫu):    

Mẫu: 36 kg – 9 kg = 27 kg

18 kg + 6 kg

24 kg – 5 kg

10 kg + 3 kg – 5 kg

58 kg – 9 kg – 20 kg 

Answer 1

18 kg + 6 kg = 24 kg

24 kg – 5 kg  = 19 kg

10 kg + 3 kg – 5 kg = 13 kg – 5 kg = 8 kg

58 kg – 9 kg – 20 kg = 49 kg – 20 kg = 29 kg