Calculeaza respectand ordinea efectuarii operatiilor: 42-6×3+(32-5×5)= ; 6×(24-14:2)-54= ; (100-35+45-15)×7+(90-9×8)= ;32:4+(72-36):9+6×(16+24:4)= .

Răspuns :

42-18+(32-25)=24+7=31
6×(24-7)-54=6×17-54=102-54=48
(65+30)×7+(90-72)=95×7+18=665+18=683
8+36:9+6×(16+6)=8+4+6×22=12+132=144