题目内容
计算:①-2-5=______;
②
-
=______;
③(-1)10×2008=______;
④(-8)-(-1)=______;
⑤-1
-(-0.5)=______;
⑥(-3)×
÷(-
)÷3=______;
⑦2007×(-2008)×0×2009×(-2010)=______;
⑧(-24)×(
-
)=______.
②
| 1 |
| 2 |
| 2 |
| 5 |
③(-1)10×2008=______;
④(-8)-(-1)=______;
⑤-1
| 1 |
| 2 |
⑥(-3)×
| 1 |
| 3 |
| 1 |
| 3 |
⑦2007×(-2008)×0×2009×(-2010)=______;
⑧(-24)×(
| 7 |
| 8 |
| 5 |
| 6 |
①-2-5=-7;
②
-
=
;
③(-1)10×2008=2008;
④(-8)-(-1)=-7;
⑤-1
-(-0.5)=-1;
⑥(-3)×
÷(-
)÷3=(-3)×
×(-3)×
=1;
⑦2007×(-2008)×0×2009×(-2010)=0;
⑧(-24)×(
-
)=(-24)×
=-1.
②
| 1 |
| 2 |
| 2 |
| 5 |
| 1 |
| 10 |
③(-1)10×2008=2008;
④(-8)-(-1)=-7;
⑤-1
| 1 |
| 2 |
⑥(-3)×
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
⑦2007×(-2008)×0×2009×(-2010)=0;
⑧(-24)×(
| 7 |
| 8 |
| 5 |
| 6 |
| 21-20 |
| 24 |
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