Răspuns:
Explicație pas cu pas:
b) 64 km - 22 dam = ? m
64000 m - 220 m = 63780 m
750 cm - 120 mm = ? mm
7500 mm - 120 mm = 7380 mm
32 km - 21 dam = ? dam
3200 dam - 21 dam = 3179 dam
1 m- 15 cm = ? cm
100 cm - 15 cm = 85 cm
650 m - 1500 dm = ? cm
65000 cm - 15000 cm = 50000 cm
8 km - 8 hm = ? dam
800 dam - 80 dam = 720 dam