Question

2.Calculeaza in două moduri produsele:
58× (45+26)
(78 - 39) ×25 -
(75 + 15) ÷40 =
72× (100 - 55) =​

Answer 1

Răspuns:

58x(45+26)=58x71=4118

(58x45)+(58x26)=2610+1508=4118

(78-39)x25=39x25=975

(78x25)-(39x25)=1950-975=975

72x(100-55)=72x45=3240

(72x100)-(72x55)=7200-3960=3240

verifica daca ai scris corect la al treilea rând