1.
a)13×2+22:2=
=26+11=
=37
b)11×(2+66):4=
=11×68:4=
=11×7=
=77
c)(13+7)×3-40:5=
=20×3-8=
=60-8=
=72
d)[4+4×(7+2-4)]:8+20:5=
=[4+4×(9-4)]:8+4=
=(4+4×5):8+4=
=(4+20):8+4=
=24:8+4=
=3+4=
=7
e)114+36:2+2+24:(17-9)=
=114+18+2+24:8=
=114+18+2+3=
=132+2+3=
=134+3=
=136
f)144:[40-96:(35-33:3)]=
=144:[40-96:(35-11)]=
=144:(40-96:24)=
=
