计算:(每小题6分,共24分)(1)   (2)   (3)   (4)   

计算:(每小题6分,共24分)(1)   (2)   (3)   (4)   

题型:解答题难度:一般来源:不详
计算:(每小题6分,共24分)
(1)   
(2)   
(3)   
(4)   
答案

(1)
(2)-16
(3)-49
(4)-19
解析

(1) 解:原式····································································· 1分
································································ 2分
··········································································· 4分
·················································································· 6分
(2) 解:原式························································· 1分
······························································ 4分
·········································································· 5分
················································································ 6分
(3) 解:原式·························································· 3分
······································································ 4分
················································································ 6分
(4) 解:原式···················································· 2分
······························································ 3分
····································································· 4分
··········································································· 5分
··············································································· 6分
举一反三
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