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t 8 Efectueazã operatiile. a) 2 m 3 cm+6 m 7 cm 3 m 14 cm+9 m 7 cm c) 3 m+ 5 cm 2 dm b) 5 m 8 dm - 42 dm 35 dm- 85 cm 8 km+ 300 m + 20 m 60 cm+ 4 dm 30 cm 3 dm 4 cm+ 7 m 6 cm 5 km 400 m​

T 8 Efectueazã Operatiile A 2 M 3 Cm6 M 7 Cm 3 M 14 Cm9 M 7 Cm C 3 M 5 Cm 2 Dm B 5 M 8 Dm 42 Dm 35 Dm 85 Cm 8 Km 300 M 20 M 60 Cm 4 Dm 30 Cm 3 Dm 4 Cm 7 M 6 Cm class=

Răspuns :

Răspuns:

2m 3cm + 6m 7cm = 8m 10cm

3m 14cm + 9m 7cm = 12m 21cm

3dm 4cm + 7m 6 cm = 7m 40cm

5m 8dm + 42dm = 10m

35dm - 85 cm = 265cm

5km - 400m = 4 km 600m

3m + 5cm - 2dm = 2m 85cm

8 km + 300m + 20m = 8km 320m

60cm + 4dm - 30cm = 70cm

Explicație pas cu pas:

Răspuns:

a)2+3=5 6+7=13 5+13=18

3+14=17 9+7=16 17+16=33

3+4=7 7+6=13 7+13=20

b) 5+8=13 13+42=55

35+85=120 sau 85-35=50

5+400=405 sau 400-5=395

c) 3+5=8 8+2=10 sau 8-2=6

8+300=308 308+20=328 sau 308-20=288

60+4=64 64+30=94 sau 64-30=32