问题 解答题
计算
8
3
×
5
8
×
4
5
5
6
-(
1
2
-
1
3
5
6
+
7
10
+
1
2
答案

(1)

8
3
×
5
8
×
4
5

=

5
3
×
4
5

=1

1
3

(2)

5
6
-(
1
2
-
1
3
),

=

5
6
-
1
6

=

2
3

(3)

5
6
+
7
10
+
1
2

=

46
30
+
1
2

=2

1
30

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