问题 解答题
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.
答案

(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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