计算题(1)-3-(-5)+(-2)(2)(-81)÷ 9 4 × 4 9 ÷(-16)(3)-24×(-

2025-02-27 03:17:37
推荐回答(1个)
回答1:

(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)-1 4 -
1
6
×[-3+(-3) 2 ]
=-1-
1
6
×[-3+9]
=-1-
1
6
×6
=-1-1
=-2.