考點(diǎn):運(yùn)算定律與簡(jiǎn)便運(yùn)算
專題:運(yùn)算定律及簡(jiǎn)算
分析:(1)把88化成80+8,再運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算;
(2)運(yùn)用除法的性質(zhì)進(jìn)行簡(jiǎn)算;
(3)運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算;
(4)運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算;
(5)運(yùn)用除法的性質(zhì)進(jìn)行簡(jiǎn)算;
(6)運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算.
解答:
解:(1)88×125
=(80+8)×125
=80×125+8×125
=10000+1000
=11000;
(2)6300÷(63×20)
=6300÷63÷20
=100÷20
=5;
(3)387×25+387×75
=387×(25+75)
=387×100
=38700;
(4)86×101-86
=86×(101-1)
=86×100
=8600;
(5)7000÷8÷125
=7000÷(8×125)
=7000÷1000
=7;
(6)67×183-67×82-67
=67×(183-82-1)
=67×100
=6700.
點(diǎn)評(píng):完成本題要注意分析式中數(shù)據(jù),運(yùn)用合適的簡(jiǎn)便方法計(jì)算.