Question

Clasa a IV-a pag. 49 ex 2​

Answer 1

Răspuns:

a)

50 m

50 dam

150 hm

b)

72 dm

39 m

132 m

c)

189 cm

408 dm

0,04 m

Explicație pas cu pas:

a)

180 dam + 320 dam = 18 m + 32 m = 50 m

1000 m - 50 dam = 100 dam - 50 dam = 50 dam

6 × 250 dam = 1500 dam = 150 hm

b)

4 m + 32 dm = 40 dm + 32 dm = 72 dm

42 m - 30 dm = 42 m - 3 m = 39 m

6 × 220 dm = 1320 dm = 132 m

c)

17 dm + 19 cm = 170 cm + 19 cm = 189 cm

415 dm - 70 cm = 415 dm - 7 dm = 408 dm

80 mm : 2 = 40 mm = 0,04 m