问题 解答题
(1)
2
5
÷
1
5
×
1
6

(2)(
3
4
-
3
5
)÷
7
10

(3)
3
4
×
1
9
+
1
4
÷9
(4)5-(
3
10
÷
6
7
+
3
4
答案

(1)

2
5
÷
1
5
×
1
6

=2×

1
6

=

1
3

(2)(

3
4
-
3
5
)÷
7
10

=

3
20
×
10
7

=

3
14

(3)

3
4
×
1
9
+
1
4
÷9,

=

3
4
×
1
9
+
1
4
×
1
9

=(

3
4
+
1
4
)×
1
9

=1×

1
9

=

1
9

(4)5-(

3
10
÷
6
7
+
3
4
),

=5-(

7
20
+
3
4
),

=5-

11
10

=3

9
10

计算题
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