问题 解答题
计算下面各题,能简算的就简算.
1-
2
11
÷
8
11
-
3
4
3+
5
8
×
3
5
÷
9
8
1
3
÷(
2
3
-
2
5
)×
3
5
4
7
×
8
9
+
3
7
÷
9
8
78×150%-78×
1
2
3
4
×[1÷(
5
6
+
3
4
)].
答案

①1-

2
11
÷
8
11
-
3
4

=1-

1
4
-
3
4

=1-(

1
4
+
3
4
),

=1-1,

=0;

②3+

5
8
×
3
5
÷
9
8

=3+

3
8
×
8
9

=3+

1
3

=3

1
3

1
3
÷(
2
3
-
2
5
)×
3
5

=

1
3
÷
4
15
×
3
5

=

1
3
×
15
4
×
3
5

=

3
4

4
7
×
8
9
+
3
7
÷
9
8

=(

4
7
+
3
7
)×
8
9

=1×

8
9

=

8
9

⑤78×150%-78×

1
2

=78×(150%-

1
2
),

=78×1,

=78;

3
4
×[1÷(
5
6
+
3
4
)]

=

3
4
×(1×
12
19
),

=

3
4
×
12
19

=

9
19

单项选择题
单项选择题 A1/A2型题