问题 解答题
3
4
×
3
8
-
3
4
×
1
8
)÷
9
32
5
4
-
1
3
×
9
5
-
2
5
7
30
×
3
5
÷
7
30
×
2
5
3-
8
9
÷
5
6
×
3
16
(1-
1
4
×
8
9
)÷
7
9
12÷[(
7
9
-
2
3
)×
9
10
]
[
1
4
+(
1
6
+
2
3
)]×
2
3
3
4
×[1÷(
5
6
+
3
4
)]
(1-
1
7
)×(
1
16
×
14
3
答案

(1)(
3
4
×
3
8
-
3
4
×
1
8
)÷
9
32

=

3
4
×(
3
8
-
1
8
)÷
9
32

=

3
4
×
1
4
×
32
9

=

2
3

(2)

5
4
-
1
3
×
9
5
-
2
5

=

5
4
-
3
5
-
2
5

=

5
4
-(
3
5
+
2
5

=

5
4
-1

=

1
4

(3)

7
30
×
3
5
÷
7
30
×
2
5

=

7
30
÷
7
30
×
2
5
×
3
5

=

6
25

(4)3-

8
9
÷
5
6
×
3
16

=3-

8
9
×
6
5
×
3
16

=3-

1
5

=2

4
5
(5)(1-
1
4
×
8
9
)÷
7
9
=(1-
2
9
)÷
7
9
=
7
9
÷
7
9

=1;

(6)12÷[(

7
9
-
2
3
)×
9
10
]
=12÷[
1
9
×
9
10
]
=12÷
1
10

=120;

(7)[

1
4
+(
1
6
+
2
3
)]×
2
3

=[

1
4
+
5
6
2
3

=

13
12
×
2
3

=

13
18

(8)

3
4
×[1÷(
5
6
+
3
4
)]

=

3
4
×[1÷
19
12
]

=

3
4
×
12
19

=

9
19

(9)(1-

1
7
)×(
1
16
×
14
3

=

6
7
×
7
24

=

1
4

填空题
判断题