tolong jawab ya pake cara 16-20 soalnya besok dikumpulin

1. 137 cm+1,2 m+28 dm=  1,37 m+1,2 m+2,8 m=5,37 m (c)
2. 0,2 ton-1,2 kwintal+ 75 kg= 200 kg-120 kg+75 kg=155 kg (c)
3. (17.25-15.10)- 1 jam 15 menit- 10 menit= 2 jam 15 menit- 1 jam 15 menit-10  menit= 135 menit-75 menit-10 menit=50 menit (a)
4. 5 gross 4 lusin-(12 lusin+1 gross 14 buah)=768 piring-(144+158)piring
                                                                       =466 piring (b)
5. 5,25 dm³+18 liter-4500 cm³=5,25 liter+18 liter-4,5 liter
                                               =18,75 liter (b)