题目内容

12×[(
11
6
-
2
3
)×3]
81÷14+17×
1
14
3
5
×(
1
7
+
8
21
÷
2
3
)
2006
2007
×2008
12×[(
11
6
-
2
3
)×3]
=12×[
7
6
×3]
=12×
7
2

=42;

81÷14+17×
1
14

=81×
1
14
+17×
1
14

=(81+17)×
1
14

=98×
1
14

=7;

3
5
×(
1
7
+
8
21
÷
2
3

=
3
5
×(
1
7
+
4
7

=
3
5
×
5
7

=
3
7


2006
2007
×2008
=
2006
2007
×(2007+1)
=
2006
2007
×2007+
2006
2007
×1
=2006+
2006
2007

=2006
2006
2007
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