计算下面各题,能简便的用简便方法计算.(841-41)÷25×483×29+71×83101×99199+199×99560÷[490÷

计算下面各题,能简便的用简便方法计算.(841-41)÷25×483×29+71×83101×99199+199×99560÷[490÷(34+36)]28×37+73×37-37.

(1)(841-41)÷25×4
=800÷25×4
=32×4
=128;

(2)83×29+71×83
=83×(29+71)
=86×100
=8500;

(3)101×99
=(100+1)×99
=100×99+1×99
=9900+99
=9999;

(4)199+199×99
=(199+1)×99
=200×99
=19800;

(5)560÷[490÷(34+36)]
=560÷[490÷70]
=560÷7
=80;

(6)28×37+73×37-37
=(28+73-1)×37
=100×37
=3700.

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