问题
解答题
(1)
(2)(-0.8)×(-0.5)=______; (3)(-1)2011-(-1)2010=______. |
答案
(1)
÷(-5)=1 5
×(-1 5
)=-1 5
;1 25
(2)(-0.8)×(-0.5)=0.8×0.5=0.4;
(3)(-1)2011-(-1)2010,
=-1-1,
=-2.
故答案为:-
,0.4,-2.1 25
(1)
(2)(-0.8)×(-0.5)=______; (3)(-1)2011-(-1)2010=______. |
(1)
÷(-5)=1 5
×(-1 5
)=-1 5
;1 25
(2)(-0.8)×(-0.5)=0.8×0.5=0.4;
(3)(-1)2011-(-1)2010,
=-1-1,
=-2.
故答案为:-
,0.4,-2.1 25