解:
(1)35.8-6.35+3.65,
=29.45+3.65,
=33.1;
(2)4200÷25,
=4200÷(5×5),
=4200÷5÷5,
=840÷5,
=168;
(3)200+144÷(16×3),
=200+144÷48,
=200+3,
=203;
(4)280×36-360×18,
=280×36-36×180,
=(280-180)×36,
=100×36,
=3600;
(5)5400÷(50×27),
=5400÷50÷27,
=5400÷27÷50,
=200÷50,
=4;
(6)[3920-(56+42×16)]÷28,
=[3920-(56+672)]÷28,
=[3920-728]÷28,
=3192÷28,
=114.
分析:(1)先算減法,再算加法;
(2)25=5×5,再根據(jù)連除的性質(zhì)進(jìn)行計(jì)算;
(3)先算乘法,再算除法,最后算加法;
(4)根據(jù)乘法分配律進(jìn)行計(jì)算;
(5)根據(jù)連除的性質(zhì)進(jìn)行計(jì)算;
(6)先算乘法,再算加法,再算減法.最后算除法.
點(diǎn)評(píng):此題主要考查分整數(shù)、小數(shù)的四則混合運(yùn)算的運(yùn)算順序和應(yīng)用運(yùn)算定律進(jìn)行簡(jiǎn)便計(jì)算.