用简便方法计算:(1)(-8) 2006 ×(- 1 8 ) 2005 =______;(2)(-0.125) 12 ×(-1
用简便方法计算:(1)(-8)2006×(-18)2005=______;(2)(-0.125)12×(-123)7×(-8)13×(-35)9=______....
用简便方法计算:(1)(-8) 2006 ×(- 1 8 ) 2005 =______;(2)(-0.125) 12 ×(-1 2 3 ) 7 ×(-8) 13 ×(- 3 5 ) 9 =______.
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血刃召唤c95
推荐于2016-10-31
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(1)(-8) 2006 ×(- ) 2005 , =(-8)×(-8) 2005 ×(- ) 2005 , =(-8)×[(-8)×(- )] 2005 , =(-8)×1, =-8;
(2)(-0.125) 12 ×(-1 ) 7 ×(-8) 13 ×(- ) 9 , =(-0.125) 12 ×(-8) 12 ×(-8)×(-1 ) 7 ×(- ) 7 ×(- ) 2 , =[(-0.125)×(-8)] 12 ×(-8)×[(- )×(- )] 7 × , =-8× , =- . |
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