问题
解答题
计算题 (1)-3-(-5)+(-2) (2)(-81)÷
(3)-24×(-
(4)-14-
|
答案
(1)-3-(-5)+(-2)
=-3+5-2
=0;
(2)(-81)÷
×9 4
÷(-16)4 9
=81×
×4 9
×4 9 1 16
=1
(3)-24×(-
+1 2
-3 4
) 1 3
=24×
-24×1 2
+24×3 4 1 3
=12-18+8
=2;
(4)-14-
×[-3+(-3)2]1 6
=-1-
×[-3+9]1 6
=-1-
×61 6
=-1-1
=-2.