Question

Pana la j va rog frumos

Answer 1

a). [20+2×(110-20)]:10+2×2=

=[20+2×90]:10+2×2=

=(20+180):10+2×2=

=200:10+2×2=

=20+4

=24

b). [72:(8×2-40:5)+91]:(7+3)=

=[72:(16-8)+91]:10=

=[72:8+91]:10=

=(9+91):10=

=100:10=

=10

c). 200+30×[9×(8+4):4]-880:10=

=200+30×[9×12÷4]-880:10=

=200+30×(9×3)-880:10=

=200+30×27-880:10=

=200+810-88=

=1010-88=

=922

d).16×[40+2×(560:8-7×7)×(10-100:10)=

=16×[40+2×(70-49)×(10-10)=

=16×[40+2×21×0]=

=16×(40+42×0)=

=16×(40+0)=

=16×40=

=640

e). 1000+8×[(56:7+12)×101-2000]:2=
=1000+8×[(8+12)×101-2000]:2=
=1000+8×[20×101-2000]:2=
=1000+8×(2020-2000):2=
=1000+8×20:2=
=1000+8×10=
=1000+80
=1080