递等式计算,能简便的就简便计算.
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(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.