问题 解答题
脱式计算.
(1)6-
7
2
×
2
3

(2)32-(
1
3
+
1
5

(3)
7
12
+(
1
2
+
1
4
1
3
-
5
6

(4)(
5
9
-
2
3
×
3
4
5
18
+
1
6
答案

(1)6-

7
2
×
2
3

=6-

7
3

=3

2
3

(2)32-(

1
3
+
1
5
),

=32-

8
15

=31

7
15

(3)

7
12
+(
1
2
+
1
4
1
3
-
5
6

=

7
12
+
3
4
×
1
3
-
5
6

=

7
12
+
1
4
-
5
6

=

5
6
-
5
6

=0;

(4)

5
9
-
2
3
×
3
4

=

5
9
-
1
2

=

1
18

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