问题 解答题
下面各题怎样计算简便就怎样算.
158+36+42+26419×27+190×5+19×23957-(158+457)
301×99600÷12÷5(125×99+125)×16.
答案

①158+36+42+264,

=(158+42)+(36+264),

=200+200,

=400;

②19×27+190×5+19×23,

=19×(27+50+23),

=19×100,

=1900;

③957-(158+457),

=957-457-158,

=500-158,

=342;

④301×99,

=301×(100-1),

=301×100-301,

=30100-300-1,

=29799;

⑤600÷12÷5,

=600÷(12×5),

=600÷60,

=10;

⑥(125×99+125)×16

=125×(99+1)×16,

=12500×8×2,

=100000×2,

=200000.

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