问题 解答题
(1)2.5×(
2
5
-
1
3
)+2

(2)
16
3
÷
4
5
-
1
3
×
3
5
答案

(1)原式=

5
2
(
2
5
-
1
3
)+2

=1-

5
6
+2

=2

1
6

(2)原式=

16
3
×
5
4
-
1
3
×
3
5

=

20
3
-
1
5

=

97
15
=6
7
15

解答题
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