a)400g = 1×400g = 400÷10 = 40 dag
2600kg = 1×2600kg =
2600×10 = 26000 hg
300dag = 1×300dag =
300×10 = 3000g
b)9000mg=1×9000mg
9000÷100 = 9g
3800mg = 1×3800mg
3800÷100 = 38dg
6000cg = 1×6000cg
6000÷100 = 60g
c)12500kg=1×12500kg
12500×10 = 125000 hg
340 hg = 1×340hg
340 ÷ 10 = 34 kg
960kg = 1×960kg
960×100 = 96000 dag