Question

Calculati si apoi completati spatiile punctate :
a) 20m + 2dam + 31dm = ...................dm
b) 36cm + 120mm - 2dm = .....................cm
c) 148hm - 1km + 240dam + 50m = ......................dam
d) 76dam - 25m + 1800dm = .......................m
e) 2600cm + 17000mm - 15m = ...........................dm
f) 640hm + 24dam - 150m = ..........................dam
Va rooooog frumos ajutatimă !

Answer 1

a.) 20m+2dam+31dam= 200dm+200dm+31dm
= 431 dm

b.) 36cm+120mm-2dm= 36cm+12cm-20cm=
=48cm-20cm=28 cm

c.) 148hm-1km+240dam+50m=1480dam-100dam
+240dam+5dam=1380dam+245dam=1625dam

d.) 76dam-25m+1800dm= 760m-25m+180m=
= 735m+180m=915 m

e.) 2600cm+17000mm-15m=260dm+170dm-
- 150dm= 430dm-150dm=280 dm

f.). 640hm+24dam-150m=6400dam+24dam-
- 15 dam= 6424dam-15dam =6409 dam

Answer 2

A)20m + 2dam + 31dm = 200dm + 200dm + 31dm = 431dm

B) 36cm + 120mm - 2dm = 36cm + 12cm - 20cm = 28 cm

C)148hm - 1km + 240dam + 50m =  1480 dam - 100 dam +240 dam +5 dam =1625 dam

D) 76dam - 25m + 1800dm = 760m - 25m + 180m = 915 m

E)2600cm + 17000mm - 15m = 260dm + 170dm  - 150dm = 280 dm

F) 640hm + 24dam - 150m=  6400dam + 24dam - 15dm = 6409 dam