解:(1)0.36×
+
÷
,
=
+
,
=
,
,
=
,
=21
;
(2)18
-(
-
)-
÷
,
=18
-5
-
2,
=18
-5
,
=18
5
,
=12
;
(3)0.56÷[(3.6×
-1.5)×4.4+5.6],
=0.56÷[(1.5-1.5)×4.4+5.6],
=0.56÷[0×4.4+5.6],
=0.56÷5.6,
=0.1.
分析:算式(1)把小數(shù)化成分?jǐn)?shù),根據(jù)分?jǐn)?shù)四則混合運(yùn)算的運(yùn)算順序.按照分?jǐn)?shù)四則運(yùn)算的計(jì)算法則進(jìn)行計(jì)算;
算式(2),根據(jù)分?jǐn)?shù)四則混合運(yùn)算的運(yùn)算順序.按照分?jǐn)?shù)四則運(yùn)算的計(jì)算法則進(jìn)行計(jì)算;
算式(3)根據(jù)小數(shù)和分?jǐn)?shù)四則混合運(yùn)算的運(yùn)算順序,按照它們的計(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,注意運(yùn)算順序和它們的計(jì)算法則.