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)先算除法,再算加法;
(2)按照從左到右的順序計(jì)算即可;
(3)運(yùn)用乘法分配律簡(jiǎn)算;
(4)運(yùn)用加法交換律和加法結(jié)合律簡(jiǎn)算;
(5)先算乘法,再算加法;
(6)按照從左到右的順序計(jì)算即可.
解答:
解:146+432÷8
=146+54
=200
(2)587+215-287
=587-287+215
=300+215
=515
(3)89×5-80×5
=(89-80)×5
=9×5
=45
(4)37+386+163+14
=(37+163)+(386+14)
=200+400
=600
(5)290×6+1820
=1740+1820
=3560
(6)396÷6×5
=66×5
=330
點(diǎn)評(píng):本題考查了四則混合運(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)算定律進(jìn)行簡(jiǎn)便計(jì)算.