问题 解答题
怎样简便就怎样计算.
1300÷25÷4
(262-26×7)÷40
192-(92-38)99×13+13
104×28
32×25×125.
答案

1300÷25÷4,

=1300÷(25×4),

=1300÷100,

=13;

(262-26×7)÷40,

=(262-182)÷40,

=80÷40,

=2;

192-(92-38),

=192-92+38,

=100+38,

=138;

99×13+13,

=(99+1)×13,

=100×13,

=1300;

32×25×125,

=4×8×25×125,

=(4×25)×(8×125),

=100×1000,

=100000;

104×28,

=(100+4)×28,

=100×28+4×28,

=2800+112,

=2912.

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