(1)4.75+3.25×2.4+7.6,
=4.75+7.8+7.6,
=20.15;
(2)(18.4+27.83÷4.6)×0.2,
=(18.4+6.05)×0.2,
=24.45×0.2,
=4.89;
(3)11×4.9-4.9,
=4.9×(11-1),
=4.9×10,
=49;
(4)1.65×4.3+8.35×4.3,
=4.3×(1.65+8.35)
=4.3×10,
=43;
(5)5.25÷[(1.2+0.05)×1.4],
=5.25÷(1.25×1.4),
=5.25÷1.75,
=3;
(6)1.7÷2.5÷0.4,
=1.7÷(2.5×0.4),
=1.7÷1,
=1.7.