解:(1)1880×201.1-187.9×2011,
=188×2011-187.9×2011,
=(188-187.9)×2011,
=0.1×2011,
=201.1;
(2)
,
=
,
=1×5×5,
=25;
(3)
,
=
[
-(
)],
=
[
],
=
,
=
;
(4)
,
=7.2×61.3+73.8×2.8,
=441.36+206.64,
=648.
分析:(1)1880×201.1-187.9×2011,轉(zhuǎn)化為188×2011-187.9×2011,再運(yùn)用乘法分配律進(jìn)行簡算;
(2)
,轉(zhuǎn)化為
,進(jìn)行簡算;
(3)
,按照分?jǐn)?shù)四則混合運(yùn)算的運(yùn)算順序和計(jì)算法則進(jìn)行計(jì)算;
(4)
.把分?jǐn)?shù)化成小數(shù),再根據(jù)小數(shù)四則混合運(yùn)算的運(yùn)算順序和計(jì)算法則進(jìn)行計(jì)算.
點(diǎn)評(píng):此題主要考查分?jǐn)?shù)、小數(shù)四則混合運(yùn)算,要注意分析式中數(shù)據(jù),運(yùn)用合適的簡便方法計(jì)算.