分析:(1)運用減法性質解答,
(2)(5)運用乘法交換律和結合律解答,
(3)(7)運用除法性質解答,
(4)運用加法交換律解答,
(6)(8)運用乘法分配律解答,
(9)依據(jù)四則運算順序解答.
解答:解:(1)168-52-48,
=168-(52+48),
=168-100,
=68;
(2)125×88,
=125×8×11,
=1000×11,
=11000;
(3)1300÷25÷4,
=1300÷(25×4),
=1300÷100,
=13;
(4)688-534+112,
=688+112-534,
=800-534,
=266;
(5)8×(29×l25),
=8×125×29,
=1000×29,
=29000;
(6)156×l0l-156,
=156×(101-1),
=156×100,
=15600;
(7)3000÷125÷8,
=3000÷(125×8),
=3000÷1000,
=3;
(8)58×72+28×58,
=58×(72+28),
=58×100,
=5800;
(9)688-(534-112),
=688-422,
=266.
點評:本題考查知識點:(1)依據(jù)四則運算順序正確計算,(2)正確運用簡便算法解決問題.