Odpowiedź :
5000cm = 500 dm
20000cm = 2000 dm
1500000mm =15000 dm
70000000mm =700000 dm
100mm=10cm
10cm=1dm
20000cm = 2000 dm
1500000mm =15000 dm
70000000mm =700000 dm
100mm=10cm
10cm=1dm