解:(1)4000-3456÷32×5,
=4000-108×5,
=4000-540,
=3460;
(2)3.68-3.6×0.2+0.18,
=3.68-0.72+0.18,
=2.96+0.18,
=3.14;
(3)48×9.9+48×0.1,
=48×(9.9+0.1),
=48×10,
=480;
(4)(1-
)÷0.25×4,
=
÷0.25×4,
=1×4,
=4;
(5)45×
+54×0.25+25%,
=(45+54+1)×0.25,
=100×0.25,
=25;
(6)2÷[
+(
-
)],
=2÷[
+
-
],
=2÷[
-
+
].
=2÷[
+
],
=2÷1,
=2.
分析:(1)先算除法,再算乘法,最后算減法,
(2)先算乘法,再?gòu)淖笙蛴疫M(jìn)行計(jì)算即可,
(3)運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算,
(4)先算小括號(hào)里的減法,再?gòu)淖笙蛴疫M(jìn)行計(jì)算即可,
(5)運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算,
(6)去掉小括號(hào),先計(jì)算中括號(hào)里的減法,再算中括號(hào)里的減法,最后算括號(hào)外的除法.
點(diǎn)評(píng):考查了整數(shù)、分?jǐn)?shù)、小數(shù)、百分?jǐn)?shù)的四則混合運(yùn)算的順序,注意靈活運(yùn)用運(yùn)算定律進(jìn)行簡(jiǎn)算.