解:(1)4620+(401-438÷73),
=4620+(401-6),
=4620+395,
=5015;
(2)168-52-48,
=168-(52+48),
=168-100,
=68;
(3)1300÷25÷4,
=1300÷(25×4),
=1300÷100,
=13;
(4)37+125+63+175,
=(37+63)+(125+175),
=100+300,
=400;
(5)28×37+73×37-37,
=37×(28+73-1),
=37×100,
=3700;
(6)(300-1456÷26)×32,
=(300-56)×32,
=244×32,
=7808;
(7)8×(29×l25),
=(8×125)×29,
=1000×29,
=29000;
(8)99×l0l,
=99×(100+1),
=99×100+99×1,
=9900+99,
=9999.
分析:(1)先算小括號(hào)里面的除法,再算小括號(hào)里面的減法,最后算括號(hào)外的加法;
(2)根據(jù)連續(xù)減去兩個(gè)數(shù)等于減去兩個(gè)數(shù)的和簡(jiǎn)算;
(3)根據(jù)連續(xù)除以兩個(gè)數(shù)等于除以這兩個(gè)數(shù)的積;
(4)運(yùn)用加法結(jié)合律簡(jiǎn)算;
(5)運(yùn)用乘法分配律簡(jiǎn)算;
(6)先算小括號(hào)里面的除法,再算小括號(hào)里面的減法,最后算括號(hào)外的乘法;
(7)運(yùn)用乘法交換律簡(jiǎn)算;
(8)運(yùn)用乘法分配律簡(jiǎn)算.
點(diǎn)評(píng):考查了運(yùn)算定律與簡(jiǎn)便運(yùn)算,四則混合運(yùn)算.注意運(yùn)算順序和運(yùn)算法則,靈活運(yùn)用所學(xué)的運(yùn)算律簡(jiǎn)便計(jì)算.