试题:
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:

我来补答
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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这些题目你会做吗?