分析:(1)運(yùn)用減法的性質(zhì)簡(jiǎn)算; (2)運(yùn)用加法結(jié)合律簡(jiǎn)算; (3)把126看作126×1,運(yùn)用乘法分配律簡(jiǎn)算;
(4)運(yùn)用乘法交換律與結(jié)合律簡(jiǎn)算;(5)運(yùn)用減法的性質(zhì)以及加法結(jié)合律簡(jiǎn)算;(6)運(yùn)用加法交換律和結(jié)合律簡(jiǎn)算;(7)運(yùn)用除法的性質(zhì)簡(jiǎn)算;(8)運(yùn)用乘法交換律和結(jié)合律簡(jiǎn)算;(9)運(yùn)用乘法分配律簡(jiǎn)算.
解答:解:(1)184-35-65,
=184-(35+65),
=184-100,
=84;
(2)591+482+118,
=591+(482+118),
=591+600,
=1191;
(3)99×126+126,
=(99+1)×126,
=100×126,
=12600;
(4)125×29×8,
=(125×8)×29,
=1000×29,
=29000;
(5)638-(238-159),
=638-238+159,
=400+159,
=559;
(6)473+149-73,
=473-73+149,
=400+149,
=549;
(7)4600÷25÷4,
=4600÷(25×4),
=4600÷100,
=46;
(8)125×6×50×8,
=125×8×(6×50),
=1000×300,
=300000;
(9)(40+4)×25,
=40×25+4×25,
=1000+100,
=1100.
點(diǎn)評(píng):此題考查了運(yùn)算定律與簡(jiǎn)便計(jì)算,注意分析式中數(shù)據(jù),靈活運(yùn)用運(yùn)算定律進(jìn)行簡(jiǎn)便計(jì)算.