Question

Calculati si apoi completati spatille punctate 20 m + 2 dam + 31 dm = ......... dm
36 cm + 120 mm - 2 dm =........ cm
148 hm - 1 km + 240 dam + 50 m = ......dam

Answer 1

Răspuns:

20 m + 2 dam + 31 dm = ......... dm

20 m = 200 dm

2 dam = 200 dm

200 dm + 200 dm + 31 dm = 431 dm

36 cm + 120 mm - 2 dm =........ cm

120 mm = 12 cm

2 dm = 20 cm

36 cm + 12 cm - 20 cm =

48 cm - 20 cm =

28 cm

148 hm - 1 km + 240 dam + 50 m = ......dam

148 hm = 1 480 dam

1 km = 100 dam

50 m = 5 dam

1 480 dam - 100 dam + 240 dam + 5 dam =

1 380 dam + 240 dam + 5 dam =

1 620 dam + 5 dam =

1 625 dam