问题 解答题
5
12
×28%×
3
14
        
7
9
÷
1
2
÷
35
36
             
3
5
×
8
9
÷
5
8
7÷70%         
5
14
×(
14
25
+28)
16
23
×27+16×
19
23
答案

(1)

5
12
×28%×
3
14
 

=

5
12
×(
14
50
×
3
14
),

=

5
12
×
3
50

=

1
40

(2)

7
9
÷
1
2
÷
35
36
             

=

7
9
×
36
35
×2,

=

8
5

(3)

3
5
×
8
9
÷
5
8

=

8
15
×
8
5

=

64
75

(4)7÷70%=100;

(5)

5
14
×(
14
25
+28)

=

5
14
×
14
25
+
5
14
×28,

=

1
5
+10,

=10

1
5

(6)

16
23
×27+16×
19
23

=

27
23
×16+16×
19
23

=(

27
23
+
19
23
)×16,

=2×16,

=32.

单项选择题 A1型题
单项选择题 A1/A2型题