题目内容

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
(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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