Question

9. Calcule as seguintes expressões numéricas: a)4.(10+20+15+30)=

B)(10.6+12.4+5.8)-40=

C)[6.(3.4-2.5)-4]+3.(4-2)-(10:2)=

D)67+{50.[70:(27+8)+18:2]+21}=

E) [30.(9-6)]+{30:(9+6)]

*contas*

Answer 1

Resposta:

Explicação passo-a-passo:

10.6=60

60+12=72

72.4=288

288+5=293

293.8=2344

2344-40=2304

6.3=18

18.4=72

72-4=68

68+3=71

71.4=284

284-2=282

282-10=272

272:2=136

67+50=117

117.70=8190

8190:70=117

177+8=125

125+18=143

143:2=71,5

71,5+21=92,5

30.9=270

270-6=264

264+30=634

634:9=70,4

70,4+6=74,4