解:(1)
×
+
÷4,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(2)
×[
÷(
+
)],
=
×[
÷
],
=
×
,
=
;
(3)6÷
-
÷6,
=8-
,
=7
;
(4)
×(
+
)+
,
=
×
+
×
+
,
=
+
+
,
=
+(
+
),
=
+1,
=1
;
(5)(
+
-
)×12,
=
×12+
×12-
×12,
=8+3-10,
=11-10,
=1;
(6)36÷(
+
),
=36÷
,
=
.
分析:(1)把除以4化成乘以
,再運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算;
(2)先算小括號(hào)里的加法,再算中括號(hào)里的除法,最后算括號(hào)外的乘法;
(3)先算出兩個(gè)除法算式,再算減法;
(4)先運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算,再運(yùn)用加法的運(yùn)算定律進(jìn)行簡(jiǎn)算;
(5)運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算;
(6)先算小括號(hào)里的加法,再算括號(hào)外的除法.
點(diǎn)評(píng):查看了分?jǐn)?shù)、小數(shù)四則混合運(yùn)算的順序,注意運(yùn)算定律的運(yùn)用,能簡(jiǎn)算的要簡(jiǎn)算,認(rèn)真計(jì)算即可.