题目内容
计算:
(1)8+(-
)-5-(-0.25);
(2)-32-(-2)3×(-4)÷(-
).
(1)8+(-
| 1 |
| 4 |
(2)-32-(-2)3×(-4)÷(-
| 1 |
| 4 |
(1)8+(-
)-5-(-0.25)
=8-
-5+0.25
=3;
(2)-32-(-2)3×(-4)÷(-
)
=-9-(-8)×(-4)×(-4)
=-9-32×(-4)
=-9+128
=119.
| 1 |
| 4 |
=8-
| 1 |
| 4 |
=3;
(2)-32-(-2)3×(-4)÷(-
| 1 |
| 4 |
=-9-(-8)×(-4)×(-4)
=-9-32×(-4)
=-9+128
=119.
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