tolong sekalian jalan nya

1. 17 km + 20 dam =
17 km = 17.000 m
20 dam = 200 m
_________ +
17.200 m
2. 2 liter + 200 cc =
200 cc = 2 dm
2 litter
---------------- +
4 dm (pangkat tiga)

maaf cuman sampai no.2