问题 解答题
脱式计算.
10÷
5
9
+
1
6
×4
1
6
×
2
3
÷(
4
5
-
8
15
2-
6
13
÷
9
26
-
2
3
12
5
×(
5
6
+
3
4
)+
4
5
答案

(1)10÷

5
9
+
1
6
×4,

=18+

2
3

=18

2
3

(2)

1
6
×
2
3
÷(
4
5
-
8
15
),

=

1
6
×
2
3
÷
4
15

=

1
9
÷
4
15

=

5
12

(3)2-

6
13
÷
9
26
-
2
3

=2-

4
3
-
2
3

=2-(

4
3
+
2
3
),

=2-2,

=0;

(4)

12
5
×(
5
6
+
3
4
)+
4
5

=

12
5
×
19
12
+
4
5

=

19
5
+
4
5

=4.6.

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