考點(diǎn):整數(shù)四則混合運(yùn)算
專題:運(yùn)算順序及法則
分析:(1)先算減法,再算除法;
(2)先算除法,再算減法;
(3)先算減法,再算除法;
(4)先算除法,再算加法;
(5)先算減法,再算乘法;
(6)按照從左向右的順序進(jìn)行計(jì)算;
(7)按照從左向右的順序進(jìn)行計(jì)算;
(8)按照從左向右的順序進(jìn)行計(jì)算;
(9)按照從左向右的順序進(jìn)行計(jì)算;
(10)先算加法,再算乘法.
解答:
解:(1)(910-485)÷5
=425÷5
=85;
(2)436-360÷4
=436-90
=346;
(3)380÷(132-127)
=380÷5
=76;
(4)534÷6+230
=89+230
=319;
(5)(900-569)×3
=331×3
=993;
(6)288÷3÷2
=96÷2
=48;
(7)24×15÷8
=360÷8
=45;
(8)96÷4×25
=24×25
=600;
(9)37×21÷7
=777÷7
=111;
(10)63×(25+42)
=63×67
=4221.
點(diǎn)評(píng):考查了四則混合運(yùn)算,注意運(yùn)算順序和運(yùn)算法則,然后再進(jìn)一步計(jì)算.