问题 解答题
计算下面各题,能简算的要简算.
(
8
9
-
1
3
)÷(
1
2
×
2
3
)
3
4
÷[(
2
3
-
1
6
)÷5]
3
10
÷(
4
5
-
1
2
)-
5
6
(
1
3
-
1
5
-
1
10
)×30
15-
4
5
×
2
3
-
7
15
6
7
×
1
11
+
1
7
÷11
答案

(1)(

8
9
-
1
3
)÷(
1
2
×
2
3
),

=

5
9
÷
1
3

=

5
3

(2)

3
4
÷[(
2
3
-
1
6
)÷5],

=

3
4
÷[
1
2
÷5],

=

3
4
÷
1
10

=

15
2

(3)

3
10
÷(
4
5
-
1
2
)-
5
6

=

3
10
÷
3
10
-
5
6

=1-

5
6

=

1
6

(4)(

1
3
-
1
5
-
1
10
)×30,

=

1
3
×30-
1
5
×30-
1
10
×30,

=10-6-3,

=1;

(5)15-

4
5
×
2
3
-
7
15

=15-

8
15
-
7
15

=15-(

8
15
+
7
15
),

=15-1,

=14;

(6)

6
7
×
1
11
+
1
7
÷11,

=

6
7
×
1
11
+
1
7
×
1
11

=(

6
7
+
1
7
)×
1
11

=1×

1
11

=

1
11

单项选择题 B1型题
单项选择题