题目内容
计算:
①(
-
+
)÷(-
);
②-22-(-2)2+(-3)2×(-
)-42÷|-4|.
①(
| 1 |
| 6 |
| 1 |
| 8 |
| 1 |
| 12 |
| 1 |
| 24 |
②-22-(-2)2+(-3)2×(-
| 2 |
| 3 |
①原式=
×(-24)+(-
)×(-24)+
×(-24)
=-4+3-2
=-3;
②原式=-4-4+9×(-
)-16÷4
=-8-6-4
=-18.
| 1 |
| 6 |
| 1 |
| 8 |
| 1 |
| 12 |
=-4+3-2
=-3;
②原式=-4-4+9×(-
| 2 |
| 3 |
=-8-6-4
=-18.
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