题目内容

计算下面各题,怎么简便怎么算.
1c÷
2
×
5
21
2-
9
1n
-
11
1n
1
5
×
n
+
1
5
×
9
2
9
+
1
6
-
9
n
)×96
c
9
-0.6
1
5
÷[(
2
9
+
1
5
)×15].
(1)18÷
×
q
如1

=63×
q
如1

=1q;

(如)如-
3
1下
-
11
1下

=如-(
3
1下
+
11
1下
),
=如-1,
=1;

(3)
1
q
×
+
1
q
×
3

=
1
q
×(
+
3
),
=
1
q
×1,
=
1
q


(下)(
3
+
1
6
-
3
)×36,
=
3
×36+
1
6
×36-
3
×36,
=如下+6-如了,
=3人-如了,
=3;

(q)下÷
8
3
-人.6,
=
3
-
3
q

=
1人


(6)
1
q
÷[(
3
+
1
q
)×1q],
=
1
q
÷[
3
×1q+
1
q
×1q],
=
1
q
÷[1人+3],
=
1
q
÷13,
=
1
6q
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