问题 解答题
用你喜欢的方法进行计算.
(1)(2-12.5%+
1
8
8
13
÷
1
65

(2)
4
13
×
6
9
+
8
13
×
4
9

(3)2004×
2002
2003
答案

(1)(2-12.5%+

1
8
8
13
÷
1
65

=(2-

1
8
+
1
8
)×
8
13
÷
1
65

=2×

8
13
÷
1
65

=

16
13
÷
1
65

=80;

(2)

4
13
×
6
9
+
8
13
×
4
9

=

24
117
+
32
117

=

56
117

(3)2004×

2002
2003

=(2003+1)×

2002
2003

=2003×

2002
2003
+1×
2002
2003

=2002+

2002
2003

=2002

2002
2003

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