4. 483×124=500×100=50000
795×106=800×100=80000
189×294=200×300=60000
5.a 287×216×0×128=0
61 992×0=0
b 514×312+486×312=
(514+486)×312=312 000
1000×312=312 000
c.975×826-975×726=97 500
(826-726)×975=97 500
100×975=97 500
a. asociativitatea
b.distributivitatea
c. distributivitatea
