Răspuns:
(2,45+1,12)×1,2=
3,57×1,2=
4,284
2,3×(0,12+1,7)=
2,3×1,82=
4,186
14,39+23,31-0,63=
37,7-0,63=
37,07
53,9-(12,38+15,67)=
53,9-28,05=
25,85