分析:(1)5.86+13.08-9.27,根據(jù)小數(shù)加、減法的計(jì)算法則進(jìn)行計(jì)算;
(2)25.4-(15.4-6.4),根據(jù)減法的運(yùn)算性質(zhì)進(jìn)行簡(jiǎn)算;
(3)21+187÷17×11,根據(jù)小數(shù)四則混合運(yùn)算的運(yùn)算順序,按照小數(shù)四則計(jì)算的計(jì)算法則進(jìn)行計(jì)算;
(4)115×6-6×5,應(yīng)用乘法分配律進(jìn)行簡(jiǎn)算;
(5)(118-75)×(475÷25),根據(jù)小數(shù)四則混合運(yùn)算的運(yùn)算順序,按照小數(shù)四則計(jì)算的計(jì)算法則進(jìn)行計(jì)算;
(6)23×201-23,應(yīng)用乘法分配律進(jìn)行簡(jiǎn)算;
(7)99×98,應(yīng)用乘法分配律進(jìn)行簡(jiǎn)算;
(8)395×99+2×395-395,應(yīng)用乘法分配律進(jìn)行簡(jiǎn)算.
解答:解:(1)5.86+13.08-9.27,
=18.94-9.27,
=9.67;
(2)25.4-(15.4-6.4),
=25.4-15.4+6.4,
=10+6.4,
=16.4;
(3)21+187÷17×11,
=21+11×11,
=21+121,
=142;
(4)115×6-6×5,
=(115-5)×6,
=110×6,
=660;
(5)(118-75)×(475÷25),
=43×19,
=817;
(6)23×201-23,
=23×(201-1),
=23×200,
=4600;
(7)99×98,
=(100-1)×98,
=100×98-98,
=9800-98,
=9702;
(8)395×99+2×395-395,
=395×(99+2-1),
=395×100,
=39500.
點(diǎn)評(píng):此題主要考查整數(shù)、小數(shù)四則混合運(yùn)算,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.