1,25 km - 12 hm + 30 hm =....... m Pakai cara biar jelas

1250m+1200m+3000m
=5450m

1,25 km = 1250 m
12 hm = 1200 m
30 hm = 3000 m
jadi 1250 m - 1200 m = 50 m
3000 m + 50 m = 3050 m