Salut *-*
Ex 4
a) 370*100=3700
448:8=56
3700-56=3644
b) (3312:3:4+1005:3*2):2=
(1104;4+335*2):2
(276+670):2=
946:2=
473
c) 5456+2184=76
7640:4=1,910
1014:13=78
78:2=36
Ex 5
( a*7+198)-19*100=2*913
( a*7+198)-1900=1826
a*7+198=1826+1900
a*7+198=3726
a*7=3726-198
a*7=3528
a=3528 :7
a=504
Ex 6
T=2t
12T+5T=10.150
T=?
t=?
1T=2t
12T=2*12t
12T=24t
inlocuim 12 T cu 14 t
avem 12T+5T=10.150
24t+5t=10.150
29t=10.150
t=10.150:29
t=350 lei (costa un telefon )
inlocuim cu t=350lei
T=2t
T=2*350
( Sper ca te-am ajutat !)
(Coroana !!!!!!)
