问题
解答题
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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.