分析:(1)101×93,運(yùn)用乘法分配律進(jìn)行簡(jiǎn)算;
(2)1230-347-453,根據(jù)減法的運(yùn)算性質(zhì)進(jìn)行簡(jiǎn)算;
(3)25×39+25,運(yùn)用乘法分配律進(jìn)行簡(jiǎn)算;
(4)38×65-55×38,運(yùn)用乘法分配律進(jìn)行簡(jiǎn)算;
(5)87×8-8×12+25×8,運(yùn)用乘法分配律進(jìn)行簡(jiǎn)算;
(6)25×32×125,把32拆分為:4×8,然后運(yùn)用乘法結(jié)合律進(jìn)行簡(jiǎn)算;
解答:解:(1)101×93,
=100×93+1×93,
=9300+93,
=9393;
(2)1230-347-453,
=1230-(347+453),
=1230-800,
=430;
(3)25×39+25,
=25×(39+1),
=25×40,
=1000;
(4)38×65-55×38,
=38×(65-55),
=38×10,
=380;
(5)87×8-8×12+25×8,
=8×(87-12+25),
=8×100,
=800;
(6)25×32×125,
=(25×4)×(8×125),
=100×1000,
=100000;
點(diǎn)評(píng):此題考查的目的是理解乘法分配律的意義,掌握減法的運(yùn)算性質(zhì),并且能夠靈活運(yùn)用這些運(yùn)算定律和運(yùn)算性質(zhì)進(jìn)行簡(jiǎn)便計(jì)算.