Răspuns:
Explicație pas cu pas:
a) 2 m 3 cm + 6 m 7 cm = 8 m 10 cm
3 m 14 cm + 9 m 7 cm = 12 m 21 cm
3 dm 4 cm + 7 m 6 cm = 3 dm 4 cm + 70 dm 6 cm = 73 dm 10 cm =
= 7 m 3 dm 10 cm = 7 m 40 cm
b) 5 m 8 dm - 42 dm = 50 dm +8 dm - 42 dm = 16 dm
35 dm - 85 cm = 350 cm - 85 cm = 265 cm = 2 m 65 cm
8 km + 300 m + 20 m = 8000 m + 320 m = 8320 m
60 cm + 4 dm - 30 cm = 60 cm + 40 cm - 30 cm = 70 cm
