题目内容
计算(请写出必要的计算过程):
(1)14+(-11)+7
(2)-
+
(3)(-1
)+(-2
)+|-1.75|
(4)-14-(1-0.5)×
×[2-(-3)2].
(1)14+(-11)+7
(2)-
| 16 |
| 3 | 64 |
(3)(-1
| 3 |
| 4 |
| 1 |
| 3 |
(4)-14-(1-0.5)×
| 1 |
| 3 |
(1)原式=14-11+7=10;
(2)原式=-4+4=0;
(3)原式=-1.75-2
+1.75=-2
;
(4)原式=-1-
×(-7)=
.
(2)原式=-4+4=0;
(3)原式=-1.75-2
| 1 |
| 3 |
| 1 |
| 3 |
(4)原式=-1-
| 1 |
| 6 |
| 1 |
| 6 |
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