Question

descopera rezultatul exercitiilor fara a efectua calculele. Justifica raspunsul.

a.8579+129-129;                                                 b.2847+913-2847;
5782-319+319;                                                     1596+0-1596;
c.7326-0-7326;                                                     d.2175+1-2175;
187+39-39-39+39.                                                 1345+1-1345-1.
scrieti in raspuns cum as scrie pe caiet.

Answer 1

a)8579,b)913,5782,0
c)0,1,187,0

Answer 2

=8579
=913
=5782
=0
=0
=1
=187
=0
daca la un numar,  aduni si scazi acelasi nr  , adunarea si scaderea se anuleaza .