解:(1)(
×
+
)÷(11-
),
=(
+
)÷(11-
),
=
÷
,
=
;
(2)(
+
×
)÷
,
=(
+
)÷
,
=
÷
,
=
;
(3)
÷[(
+
)×2],
=
÷[
×2],
=
÷
,
=
;
(4)128×
-
×128-2÷
,
=128×
-
×128-2×128,
=(
-
-2)×128,
=(4-2)×128,
=2×128,
=256;
(5)
×0.375+
÷
,
=
×0.375+
×
,
=(
+
)×
,
=2×
,
=
;
(6)
×1
+125%+0.625×1.25,
=0.375×1.25+1.25+0.625×1.25,
=(0.375+1+0.625)×1.25,
=2×1.25,
=2.5.
分析:(1)先算小括號里的乘法,再算小括號里的加減法,最后算括號外的除法,
(2)先算小括號里的乘法,再算小括號里的加法,最后算括號外的除法,
(3)先算小括號里的加法,再算在括號里的乘法,最后算括號外的除法,
(4)運(yùn)用乘法的分配律進(jìn)行簡算,
(5)運(yùn)用乘法的分配律進(jìn)行簡算,
(6)運(yùn)用乘法的分配律進(jìn)行簡算.
點(diǎn)評:此題考查了分?jǐn)?shù)、小數(shù)、百分?jǐn)?shù)的四則混合運(yùn)算的順序,靈活運(yùn)用運(yùn)算定律進(jìn)行簡算.