题目内容

计算下面各题,能简便计算的要简便计算
5
8
+
3
8
÷
2
3

73÷
3
7
-37×
7
3

1÷(15-
12
5
-
13
5

3
5
÷[(
7
9
+
1
3
)×
3
2
].
(1)
5
8
+
3
8
÷
2
3

=
5
8
+
3
8
×
3
2

=
10
16
+
9
16

=
19
16


(2)73÷
3
7
-37×
7
3

=73×
7
3
-37×
7
3

=(73-37)×
7
3

=36×
7
3

=84;

(3)1÷(15-
12
5
-
13
5

=1÷[15-(
12
5
+
13
5
],
=1÷(15-5),
=1÷10,
=
1
10


(4)
3
5
÷[(
7
9
+
1
3
)×
3
2
].
=
3
5
÷[(
7
9
+
3
9
)×
3
2
],
=
3
5
÷(
10
9
×
3
2
),
=
3
5
÷
5
3

=
3
5
×
3
5

=
9
25
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