题目内容

计算:①-2-5=______;
1
2
-
2
5
=______;
③(-1)10×2008=______;
④(-8)-(-1)=______;
⑤-1
1
2
-(-0.5)=______;
(-3)×
1
3
÷(-
1
3
)÷3
=______;
⑦2007×(-2008)×0×2009×(-2010)=______;
(-24)×(
7
8
-
5
6
)
=______.
①-2-5=-7;
1
2
-
2
5
=
1
10

③(-1)10×2008=2008;
④(-8)-(-1)=-7;
⑤-1
1
2
-(-0.5)=-1;
(-3)×
1
3
÷(-
1
3
)÷3
=(-3)×
1
3
×(-3)×
1
3
=1;
⑦2007×(-2008)×0×2009×(-2010)=0;
(-24)×(
7
8
-
5
6
)
=(-24)×
21-20
24
=-1.
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网