题目内容
计算下列各式
(1)-9+5×(-6)-(-4)2÷(-8)
(2)(-
-
+
)×|-24|-
×(-2.5)×(-8)
(1)-9+5×(-6)-(-4)2÷(-8)
(2)(-
| 1 |
| 4 |
| 1 |
| 2 |
| 2 |
| 3 |
| 5 |
| 4 |
(1)原式=-9-30-16÷(-8)
=-39+2
=-37;
(2)原式=-
×24-
×24+
×24-
×
×8
=-6-12+16-25
=-43+16
=-27.
=-39+2
=-37;
(2)原式=-
| 1 |
| 4 |
| 1 |
| 2 |
| 2 |
| 3 |
| 5 |
| 4 |
| 5 |
| 2 |
=-6-12+16-25
=-43+16
=-27.
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