题目内容
计算
(1)3
+(-
)-(-
)+2
(2)-82+3×(-2)2+(-6)÷(-
)2.
(1)3
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 2 |
| 3 |
(2)-82+3×(-2)2+(-6)÷(-
| 1 |
| 3 |
(1)原式=(3
-
)+(
+2
)
=3+3
=6;
(2)原式=-64+12-54
=-106.
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 2 |
| 3 |
=3+3
=6;
(2)原式=-64+12-54
=-106.
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