问题 解答题
168-52-48125×8875×56-56×28
37+125+63+175156×l0l-156688-534+112
8×(29×l25)404×251300÷25÷4.
答案

(1)168-52-48,

=168-(52+48),

=168-100,

=68;

(2)125×88,

=125×(8×11),

=125×8×11,

=1000×11,

=11000;

(3)75×56-56×28,

=(75-28)×56,

=47×56,

=2632;

(4)37+125+63+175,

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

=100+300,

=400;

(5)156×l0l-156,

=156×(101-1),

=156×100,

=15600;

(6)688-534+112,

=(688+112)-534,

=800-534,

=266;

(7)8×(29×l25),

=8×125×29,

=1000×29,

=29000;

(8)404×25,

=(400+4)×25,

=400×25+4×25,

=10000+100,

=10100;

(9)1300÷25÷4,

=1300÷(25×4),

=1300÷100,

=13.

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