问题 解答题
168-52-48125×881300÷25÷4
37+125+63+17575×56-56×28666-234-166
8×29×l25156×l0l-156404×25.
答案

(1)168-52-48,

=168-(52+48),

=168-100,

=68;

(2)125×88,

=125×(80+8),

=125×80+125×8,

=10000+1000,

=11000;

(3)1300÷25÷4,

=1300÷(25×4),

=1300÷100,

=13;

(4)37+125+63+175,

=(37+63)+(125+175),

=100+300,

=400;

(5)75×56-56×28,

=56×(75-28),

=56×47,

=2632;

(6)666-234-166,

=666-(234+166),

=666-400,

=266;

(7)8×29×l25,

=(8×l25)×29,

=1000×29,

=29000;

(8)156×l0l-156,

=156×(l0l-1),

=15600;

(9)404×25,

=(400+4)×25,

=400×25+4×25,

=10000+100,

=10100.

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