分析:(1)先算除法,再算乘法,最后算減法;
(2)運(yùn)用加法的交換律、結(jié)合律進(jìn)行簡(jiǎn)算;
(3)運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算;
(4)運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算;
(5)先算小括號(hào)里的乘法,再?gòu)淖笙蛴疫M(jìn)行計(jì)算即可;
(6)先算小括號(hào)里的減法,再算中括號(hào)里的乘法,最后算括號(hào)外的除法.
解答:解:(1)7.73-2.3÷0.5×80%,
=7.73-4.6×80%,
=7.73-3.68,
=4.05;
(2)1.37+
+1.63+
,
=(1.37+1.63)+(
+
),
=3+1,
=4;
(3)
×
+
÷
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(4)(
+
)×24,
=
×24+
×24,
=8+9,
=17;
(5)55×66÷(11×11),
=55×66÷121,
=3630÷121,
=30;
(6)35÷[
×(1-
)],
=35÷[
×
],
=35÷
,
=56.
點(diǎn)評(píng):此題考查了整數(shù)、分?jǐn)?shù)、小數(shù)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.