Răspuns:
Explicație pas cu pas:
4 q=400 kg
400 cg=4 g
1 500 cg=15 g
4 000 mg=4 g
20 dg=2 g
40 mg=4 cg
____________
7 t+7 kg= 7000 kg + 7 kg = 7007 kg
8 g-3 000 mg= 8g - 3 g = 5 g
9 q+500 kg= 900kg + 500 kg = 1400 kg
300 mg-2 dg= 3dg - 2 dg = 1 dg
400 kg+7 q= 4q + 7 q = 11 q
1 g-100 cg= 100cg - 100 cg = 0
2 t+80 q= 2t + 8 t = 10 t
9 kg-5 000 g= 9000g - 5000 g = 4000 g
2 000 kg+90 q= 2t + 9 t = 11 t
8×15 dg= 120 dg = 12 g
7 000 g-20 hg= 7 kg - 2kg = 5 kg
900 q:5= 180 q = 18 t