题目内容
化简下列式子
(1)
(2)
(-
)+
-
×
.
(1)
13-2
|
| 32 |
| 3 |
| 4 |
| 48 |
| ||
| 12 |
| 0.2 |
| 0.8 |
(1)原式=
=|
-
|=
-
;
(2)原式=-4
×
×4
+
-
×
=-12
+
-
=-
-
.
(
|
| 7 |
| 6 |
| 7 |
| 6 |
(2)原式=-4
| 2 |
| 3 |
| 4 |
| 3 |
6
| ||
| 12 |
| ||
| 5 |
2
| ||
| 5 |
=-12
| 6 |
| ||
| 2 |
| 2 |
| 5 |
=-
23
| ||
| 2 |
| 2 |
| 5 |
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化简下列式子结果为负数的是( )
| A、|-2| | B、-(-2) | C、2-1 | D、-22 |