分析:(1)把32寫成8×4的形式,用乘法結(jié)合律進(jìn)行簡(jiǎn)算;
(2)78×103寫成78×(100+3),用乘法分配律進(jìn)行簡(jiǎn)算;
(3)把36寫成4×9的形式,用乘法結(jié)合律進(jìn)行簡(jiǎn)算;
(4)利用乘法分配律進(jìn)行簡(jiǎn)算;
(5)利用乘法分配律進(jìn)行簡(jiǎn)算;
(6)用乘法交換律、結(jié)合律進(jìn)行簡(jiǎn)算;
解答:解:(1)125×32×25,
=125×8×4×25,
=(125×8)×(4×25),
=1000×100,
=100000;
(2)78×103,
=78×(100+3),
=78×100+78×3,
=7800+234,
=8034;
(3)25×36×11,
=25×4×9×11,
=(25×4)×(9×11),
=100×99,
=9900;
(4)14×37+63×14,
=14×(37+63),
=14×100,
=1400;
(5)(25+125 )×8,
=25×8+125×8,
=200+1000,
=1200;
(6)5×4×20×25,
=4×25×5×20,
=(4×25)×(5×20),
=100×100,
=10000;
點(diǎn)評(píng):此題考查了靈活運(yùn)用整數(shù)運(yùn)算定律進(jìn)行簡(jiǎn)便計(jì)算.