4
8. Calculaţi:
a) 9 (7-5)
12 x (9-5)
10 x (8-7)
c) 81-2 x (16-9)
87 +90:(11-2)
(7+8)x(5-4)

b) 7+9x6
9-0x9
8 + 6 x 8
d) 9+48 :(54-46)
8+77:(98-87)
(9+7):(9–7)