问题 解答题
脱式计算
2-
6
13
÷
9
26
-
1
3
5
14
÷
7
5
+
5
7
×
9
14
4
5
+
1
4
)÷
7
3
+
7
10
答案

①2-

6
13
÷
9
26
-
1
3

=2-

4
3
-
1
3

=

1
3

5
14
÷
7
5
+
5
7
×
9
14

=

5
14
×
5
7
+
5
7
×
9
14

=

5
7
×(
5
14
+
9
14
),

=

5
7
×1,

=

5
7

③(

4
5
+
1
4
)÷
7
3
+
7
10

=

21
20
×
3
7
+
7
10

=

9
20
+
7
10

=

23
20

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