解:(1)
÷[(
-
)÷
],
=
÷[
÷
],
=
÷
,
=
;
(2)
×
+
÷9,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(3)100×(
+
+
+…+
),
=100×[(1-
)+(
-
)+(
-
)+…+(
-
),
=100×[1-
+
-
+
-
+…+
-
],
=100×(1-
),
=100×
,
=99;
(4)36×(
+
-
),
=36×
+36×
-36×
,
=21+20-9,
=41-9,
=32.
分析:(1)先算小括号里面的减法,再算中括号里面的除法,最后算括号外的除法;
(2)先把除法变成乘法,再运用乘法分配律简算;
(3)
=1-
,
=
-
,
=
-
…,由此化简求解;
(4)运用乘法分配律简算.
点评:此题是考查四则混合运算,要仔细观察算式的特点,灵活运用一些定律进行简便计算.