题目内容
计算:(1)
(2)![]()
(3)
(4)![]()
(1)40 (2)-2 (3)-27 (4)0
解析:(1)
=-23+58+5=35+5=40
(2)
=
=-1-1=-2
(3)
=-18-30+21=-27
(4)
=-1-
+
=0
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题目内容
计算:(1)
(2)![]()
(3)
(4)![]()
(1)40 (2)-2 (3)-27 (4)0
解析:(1)
=-23+58+5=35+5=40
(2)
=
=-1-1=-2
(3)
=-18-30+21=-27
(4)
=-1-
+
=0