题目内容

(1)18-6÷(-2)×(-
1
3
)                     
(2)(
1
4
+
1
6
-
1
2
)×(-12)

(3)(-3)2×{-
2
3
+(-
5
9
)
}                        
(4)0-23÷(-4)3-
1
8
(1)18-6÷(-2)×(-
1
3
) 
=18-3×
1
3

=18-1
=17;
                    
(2)(
1
4
+
1
6
-
1
2
)×(-12)

=
1
4
×(-12)+
1
6
×(-12)-
1
2
×(-12)
=-3-2+6
=1;

(3)(-3)2×{-
2
3
+(-
5
9
)
}       
=9×{-
11
9
}     
=-11;
             
(4)0-23÷(-4)3-
1
8

=0-8÷(-64)-
1
8

=0+
1
8
-
1
8

=0.
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