问题 解答题
计算下面各题.
7
18
÷
5
9
7
10
÷4÷
14
5
1
4
×
8
9
÷
9
10
5-
7
15
÷
1
3
-
3
5
6
7
-
7
6
÷
1
9
6
7
-
3
5
)÷
9
5
答案

(1)

7
18
÷
5
9

=

7
18
×
9
5

=

7
10

(2)

7
10
÷4÷
14
5

=

7
40
÷
14
5

=

1
16

(3)

1
4
×
8
9
÷
9
10

=

2
9
÷
9
10

=

20
81

(4)5-

7
15
÷
1
3
-
3
5

=5-

7
5
-
3
5

=5-(

7
5
+
3
5
),

=5-2,

=3;

(5)9÷

6
7
-
7
6
÷
1
9

=

21
2
-
21
2

=0;

(6)(

6
7
-
3
5
)÷
9
5

=

9
35
÷
9
5

=

1
7

选择题
判断题