1)12 dam + 2 hm = 120 m + 200 m = 220 m
2) 8 km + 15 dam = 8000 m + 150 m = 8150 m
3) 52 hm - 110 dam = 5200 m - 1100 m = 4100 m
4) 8 m + 124 dm = 800 cm + 1240 cm = 2040 cm
5) 70 dm + 18 cm = 7000 mm + 180 mm = 7180 mm
6) 3000 cm + 180 dm = 30 m + 18 m = 48 m
7) 85 dam - 13 m = 8500 dm - 130 dm = 8370 dm
8) 5 hm - 82 m = 5000 dm - 820 dm = 4180 dm
9) 84 km - 15 dam = 84000 m - 150 m = 83850 m