考點(diǎn):整數(shù)四則混合運(yùn)算,運(yùn)算定律與簡(jiǎn)便運(yùn)算
專題:運(yùn)算順序及法則,運(yùn)算定律及簡(jiǎn)算
分析:(1)運(yùn)用除法性質(zhì)解答,
(2)運(yùn)用減法性質(zhì)解答,
(3)運(yùn)用加法交換律和結(jié)合律解答,
(4)化44=11×4,再運(yùn)用乘法結(jié)合律解答,
(5)運(yùn)用乘法交換律和結(jié)合律解答,
(6)運(yùn)用乘法分配律解答.
解答:
解:(1)4600÷25÷4
=4600÷(25×4)
=4600÷100
=46;
(2)589-256-44
=589-(256+44)
=589-300
=289;
(3)76+25+24+175
=(76++24)+(25+175)
=100+200
=300;
(4)44×25
=11×(4×25)
=11×100
=1100;
(5)8×(29×l25)
=(8×l25)×29
=1000×29
=29000;
(6)196×l0l-196
=196×(l0l-1)
=196×100
=19600.
點(diǎn)評(píng):正確運(yùn)用簡(jiǎn)便方法解決問(wèn)題,是本題考查知識(shí)點(diǎn).