问题 解答题
脱式计算.
1
6
÷[1÷(
3
5
-
3
10
8
9
×[+(
7
16
-
1
4
)]
1
3
+
1
4
)×(
3
7
+
1
2
3
5
×
4
3
+
2
5
÷
4
5
答案

(1)

1
6
÷[1÷(
3
5
-
3
10
)],

=

1
6
÷[1÷
3
10
],

=

1
6
÷
10
3

=

1
6
×
3
10

=

1
20

(2)

8
9
×[
3
4
+(
7
16
-
1
4
)],

=

8
9
×[
3
4
+
3
16
],

=

8
9
×
15
16

=

5
6

(3)(

1
3
+
1
4
)×(
3
7
+
1
2
),

=

7
12
×
13
14

=

13
24

(4)

3
5
×
4
3
+
2
5
÷
4
5

=

3
5
×
4
3
+
2
5
×
5
4

=

4
5
+
1
2

=

13
10

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