1 325 406 1.25
分析:(1)把32看作4×8,運(yùn)用乘法交換律與結(jié)合律簡(jiǎn)算;
(2)根據(jù)數(shù)字特點(diǎn),把原式變?yōu)?.25×25+3.25×75,運(yùn)用乘法分配律簡(jiǎn)算;
(3)運(yùn)用乘法分配律簡(jiǎn)算;
(4)把分?jǐn)?shù)和百分?jǐn)?shù)化為小數(shù),運(yùn)用乘法分配律簡(jiǎn)算.
解答:(1)0.125×0.25×32,
=0.125×0.25×4×8,
=(0.125×8)×(0.25×4),
=1×1,
=1;
(2)3.25×25+32.5×7.5,
=3.25×25+3.25×75,
=3.25×(25+75),
=3.25×100,
=325;
(3)4.06×76+4.06×25-4.06,
=4.06×(76+25-1),
=4.06×100,
=406;
(4)0.125×
+
×8.25+12.5%,
=0.125×0.75+0.125×8.25+0.125,
=0.125×(0.75+8.25+1),
=0.125×10,
=1.25.
點(diǎn)評(píng):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.