题目内容
计算:
(1)8×(-
)×(-0.25)×(-
)
(2)-32÷3+(
-
)×12-(-1)2012.
(1)8×(-
| 5 |
| 3 |
| 6 |
| 5 |
(2)-32÷3+(
| 1 |
| 2 |
| 2 |
| 3 |
(1)8×(-
)×(-0.25)×(-
)
=[8×(-0.25)]×[(-
)×(-
)]
=-2×2
=-4;
(2)-32÷3+(
-
)×12-(-1)2012
=-9÷3+(6-8)-1
=-3+(-2)-1
=-6.
| 5 |
| 3 |
| 6 |
| 5 |
=[8×(-0.25)]×[(-
| 5 |
| 3 |
| 6 |
| 5 |
=-2×2
=-4;
(2)-32÷3+(
| 1 |
| 2 |
| 2 |
| 3 |
=-9÷3+(6-8)-1
=-3+(-2)-1
=-6.
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