题目内容
计算题 (1)17-8÷(-2)+4×(-5)(2)-2
+5
÷(-2)×(-
).
| 1 |
| 2 |
| 3 |
| 5 |
| 5 |
| 14 |
(1)原式=17+4-20
=1;
(2)原式=-
+
×(-
)×(-
)
=-
-
×(-
)
=-
+1
=-1
.
=1;
(2)原式=-
| 5 |
| 2 |
| 28 |
| 5 |
| 1 |
| 2 |
| 5 |
| 14 |
=-
| 5 |
| 2 |
| 14 |
| 5 |
| 5 |
| 14 |
=-
| 5 |
| 2 |
=-1
| 1 |
| 2 |
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