问题 解答题
计算下面各题,能简算的必须简算.
8
17
÷9+
1
9
×
8
17

(1-
1
100
×70)÷
2
7
3
4
-
3
4
÷3+
9
25
9
22
÷(
5
11
-
1
3
80×
1
8
÷
1
800
×
1
800
1
3
÷
1
2
-
5
4
×
2
5
答案

8
17
÷9+
1
9
×
8
17

=

8
17
×
1
9
+
1
9
×
8
17

=

1
9
×(
8
17
+
8
17
),

=

1
9
×
16
17

=

16
153

②(1-

1
100
×20)÷
2
7

=(1-

1
5
÷
2
7

=

4
5
×
7
2

=

14
5

3
4
-
3
4
÷3+
9
25

=

3
4
-
1
4
+
9
25

=

43
50

9
22
÷(
5
11
-
1
3
),

=

9
22
÷
4
33

=

27
8

⑤80×

1
8
÷
1
800
×
1
800

=80×

1
8
×800×
1
800

=10;

1
3
÷
1
2
-
5
4
×
2
5

=

2
3
-
1
2

=

1
6

单项选择题
单项选择题 A2型题