12 km + 25 hm = .... dam 1,75 km - 20 dam = .... m

ini jawabannya maaf kalo jawabannya salah

12km =12 ×100 = 1200 dam
25hm = 25 ×10 = 250dam

Maka 1200+250 = 1450dam

1,75km = 1,75 ×1000 = 1750m
20 dam = 20 × 10 = 200m

Maka 1750 - 200 = 17550 m