分析:(1)(125+7)×8,運(yùn)用乘法分配律進(jìn)行簡(jiǎn)算;
(2)3200÷25÷4,根據(jù)除法的運(yùn)算性質(zhì)進(jìn)行簡(jiǎn)算;
(3)3.27+6.4+2.73+4.6,運(yùn)用加法交換律和結(jié)合律進(jìn)行簡(jiǎn)算;
(4)25×44,運(yùn)用乘法結(jié)合律進(jìn)行簡(jiǎn)算;
(5)6.45-2.56-1.44.根據(jù)減法的運(yùn)算性質(zhì)進(jìn)行簡(jiǎn)算.
解答:解:(1)(125+7)×8,
=125×8+7×8,
=1000+56,
=1056;
(2)3200÷25÷4,
=3200÷(25×4),
=3200÷100,
=32;
(3)3.27+6.4+2.73+4.6,
=(3.27+2.73)+(6.4+4.6),
=6+11,
=17;
(4)25×44,
=(25×4)×11,
=100×11,
=1100;
(5)6.45-2.56-1.44,
=6.45-(2.56+1.44),
=6.45-4,
=2.45.
點(diǎn)評(píng):此題考查的目的是理解掌握整數(shù)加法、乘法的運(yùn)算定律和減法、除法的運(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.