1) 5+5:5+4x1 =
=5+1+4=
=10
2) 56:7+(7x4+2):10 =
= 8+(28+2):10
= 8+30:10
= 8+3
=11
3) 303+303:3-303x(3-3)=
=303+101-303x0
= 303+101-0
= 404
4)(32+26+30+32):4=
=120:4
= 30
5) 256-(70+28)=
= 256-98
= 258
6) (87-57)x[(376:4):2]=
=30x47
=1410
