题目内容
计算:
(1)(
+
-
+
)×(-48);
(2)7×[(-2)3-(-4)+|-22|].
(1)(
| 1 |
| 6 |
| 1 |
| 8 |
| 1 |
| 4 |
| 1 |
| 12 |
(2)7×[(-2)3-(-4)+|-22|].
(1)(
+
-
+
)×(-48)
=-8-6+12-4
=-6;
(2)7×[(-2)3-(-4)+|-22|]
=7×[-8-(-4)+4]
=7×0
=0.
| 1 |
| 6 |
| 1 |
| 8 |
| 1 |
| 4 |
| 1 |
| 12 |
=-8-6+12-4
=-6;
(2)7×[(-2)3-(-4)+|-22|]
=7×[-8-(-4)+4]
=7×0
=0.
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