Răspuns:
a)405-405:15=
405-27=
378
b)20×{4+10×[120+20×(36-36:4)]}=
20×{4+10×[120+20×(36-9)]}=
20×[4+10×(120+20×27)]=
20×[4+10×(120+540)]=
20×(4+10×660)=
20×(4+6600)=
20+6604=
6624
c)(2³×5+5⁰):41=
(8×5+1):41=
41:41=
1
d)[(2³)⁴:(2⁵)²-17⁰]×6=
(2¹²:2¹⁰-1)×6=
(2²-1)×6=
2×6
12
