ta 2 Exerciţii şi probleme 1. Calculaţi: a) 1+1-1-1:1; b) 1 (1+1)-(1-1): 1; 9999-0-0:7777+5555; d) 333-33-3+33³; e) 100-100:10:1000: f) 1000000 (10-1000)-100; g) (1000-10):10+10000 10000; h) (104-10³ +10²): 10¹ +10°; i) (325-325) [256 +1435: (48 +239)]; j) 3+3 [3-3-3-(3:3)] : 3; k) [450:5:(3-6)+35]. 7-140 +(540; 60+7) (63:9); 1) [500-(3500: 700 80-40 9) (64:8)]:9-(72:6): (81:27); m) 2 (350 [491-3 (125-78)] +350}.​