2017
2. Efectuați:
a) 2.5+32 (52-23)+144:9;
b) 34:32:30 +2 (72-24 .3)+576:48 ;
c) 3.2° +2018° +(20 – 32.7) +12-108:81;
d) 2" : 4+0308 +3? :(5* +3" : 3")* +7.(22.52 -32.11) **
e) 42 +59 +6+2 (47 -2.8)+25-16:50;
1) [5•(52 +3: 320)+(3*)*] 2+(285–81):102.
6 Să se afle​