问题 解答题
计算题
(1)-3-(-5)+(-2)
(2)(-81)÷
9
4
×
4
9
÷(-16)
(3)-24×(-
1
2
+
3
4
-
1
3
)            
(4)-14-
1
6
×[-3+(-3)2].
答案

(1)-3-(-5)+(-2)

=-3+5-2

=0;

(2)(-81)÷

9
4
×
4
9
÷(-16)

=81×

4
9
×
4
9
×
1
16

=1

(3)-24×(-

1
2
+
3
4
-
1
3
) 

=24×

1
2
-24×
3
4
+24×
1
3
   

=12-18+8

=2;

        

(4)-14-

1
6
×[-3+(-3)2]

=-1-

1
6
×[-3+9]

=-1-

1
6
×6

=-1-1

=-2.

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