Răspuns:
Explicație pas cu pas:
340 g +2 100 cg ==34 000cg+2 100cg=36 100 cg
560 dg-1300mg=5600mg-1300mg=4300mg
18t+250 q =18 000kg+25 000kg=43 000kg=430q
3 540 hg - 145 kg=3540 hg-1450hg=2090 hg
300 g + 28 hg + 15 dag - 17 hg=300g+2800g+150g-1700g=1550 g
80 hg + 16 kg + 2q =80hg+160hg+2000hg=2 240 hg