题目内容

能简算的要简算.
13
5
11
-3
4
7
-2
3
7
+2
6
11
18
9
10
÷9
5
8
×2
2
3
+2
1
3
÷1
1
3
13
7
8
×
1
16
+6
1
8
÷16.
(1)13
5
11
-3
4
7
-2
3
7
+2
6
11

=(13
5
11
+2
6
11
)-(3
4
7
+2
3
7
),
=16-6,
=10;

(2)18
9
10
÷9,
=(18+
9
10
)×
1
9

=18×
1
9
+
9
10
×
1
9

=2+
1
10

=2
1
10


(3)
5
8
×2
2
3
+2
1
3
÷1
1
3

=
5
8
×
8
3
+
7
3
×
3
4

=
5
3
+
7
4

=3
5
12


(4)13
7
8
×
1
16
+6
1
8
÷16,
=13
7
8
×
1
16
+6
1
8
×
1
16

=(13
7
8
+6
1
8
)×
1
16

=20×
1
16

=1
1
4
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