解:(1)(
)÷
,
=(
)×24,
=24×
+
×24+
×24,
=6+3+
,
=9+
,
=10
;
(2)
×11-
×
-
×
,
=(
×11)-[
×(
+
)],
=(
×11)-(
×1),
=
-
,
=
;
(3)12×(
),
=12×
+12×
-12×
,
=8+3-2,
=9;
(4)(
)×12-36÷47,
=
×12+
×12-36÷47,
=1+
-
,
=1+(
-
),
=1+0,
=1;
(5)23-
×
÷
,
=23-
÷
,
=23-18,
=5;
(6)[1-(
)]÷
,
=[1-
]÷
,
=
÷
,
=
.
分析:(1)先把除法變成乘法,再運(yùn)用乘法分配律簡(jiǎn)算;
(2)把后兩部分的乘法運(yùn)用乘法分配律簡(jiǎn)算;
(3)運(yùn)用乘法分配律簡(jiǎn)算;
(4)先運(yùn)用乘法分配律簡(jiǎn)算,再運(yùn)用加法結(jié)合律簡(jiǎn)算;
(5)先算乘法,再算除法,最后算加法;
(6)先算小括號(hào)里面的加法,再算中括號(hào)里面的減法,最后算括號(hào)外的除法.
點(diǎn)評(píng):此題是考查四則混合運(yùn)算,要仔細(xì)觀察算式的特點(diǎn),靈活運(yùn)用一些定律進(jìn)行簡(jiǎn)便計(jì)算.