280 g+ 1200 cg= 2800 cg+ 1200 cg= 400p cg
21 t+ 140 q= 210 q+ 140 q= 350 q
200 g + 16 hg + 13 dag - 11 hg = 200g+ 1600 g + 130g- 1100g= 830 g
720 dg - 1100 mg= 7200 mg - 1100 mg= 6100 mg
1800 hg - 120 kg= 1800 hg- 1200 hg= 600 hg
90 hg + 18 kg + 5 q= 90 hg + 180 hg + 5000 hg = 5270 hg