问题 解答题
计算下列各式:
(1)(
1
4
+
1
6
÷
1
2
-
2
3
×
1
4
+
1
6

(2)6
2
7
-2
2
3
×1
4
8
+3
1
3
÷
5
9

(3)1÷[8
3
4
-(8.5-4×1
7
8
)]

(4)(3.75-
8
15
×
9
2
27
20
答案

(1)(

1
4
+
1
6
÷
1
2
-
2
3
×
1
4
+
1
6

=

5
12
÷
1
2
-
2
3
×
1
4
+
1
6

=

5
6
-
1
6
+
1
6

=

5
6

(2)6

2
7
-2
2
3
×1
4
8
+3
1
3
÷
5
9

=6

2
7
-4+6,

=2

2
7
+6,

=8

2
7

(3)1÷[8

3
4
-(8.5-4×1
7
8
)],

=1÷[8

3
4
-(8.5-
15
2
)],

=1÷[8

3
4
-1],

=1÷7

3
4

=

4
31

(4)(3.75-

8
15
×
9
2
27
20

=(3.75-

12
5
27
20

=

27
20
÷
27
20

=1.

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