题目内容
-[0.5-
-(
+2.5-0.3)]等于( )
| 1 |
| 3 |
| 1 |
| 6 |
| A.2.2 | B.-3.2 | C.-2.2 | D.3.2 |
-[0.5-
-(
+2.5-0.3)]
=-[0.5-
-
-2.5+0.3]
=-2.2.
故选答案C.
| 1 |
| 3 |
| 1 |
| 6 |
=-[0.5-
| 1 |
| 3 |
| 1 |
| 6 |
=-2.2.
故选答案C.
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的倒数是( )
| 1 |
| 3 |
| A、-3 | ||
| B、-1 | ||
| C、3 | ||
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