(1)185-85÷5+83,
=185-17+83,
=168+83,
=251;
(2)[1/8×2.75+0.125×
1
4]-12.5%,
=0.125×2.75+0.125×0.25-0.125,
=0.125×(2.75+0.25-1),
=0.125×2,
=0.25;
(3)1.25×32×2.5,
=(1.25×8)×(4×2.5),
=10×10,
=100;
(4)880×12.5,
=800×12.5+80×12.5,
=10000+1000,
=11000.
(1)185-85÷5+83,
=185-17+83,
=168+83,
=251;
(2)[1/8×2.75+0.125×
1
4]-12.5%,
=0.125×2.75+0.125×0.25-0.125,
=0.125×(2.75+0.25-1),
=0.125×2,
=0.25;
(3)1.25×32×2.5,
=(1.25×8)×(4×2.5),
=10×10,
=100;
(4)880×12.5,
=800×12.5+80×12.5,
=10000+1000,
=11000.