题目内容
计算:
(1)(-2)+(-5)-(-9);
(2)-22-|-2|+
+(-1)2011;
(3)(-6)2×(
-
)-27÷(1
)3.
(1)(-2)+(-5)-(-9);
(2)-22-|-2|+
|
(3)(-6)2×(
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 2 |
(1)原式=-2-5+9
=2;
(2)原式=-4-2+
-1
=-6
.
(3)原式=36×
-27÷
=6-8
=-2.
=2;
(2)原式=-4-2+
| 1 |
| 3 |
=-6
| 2 |
| 3 |
(3)原式=36×
| 1 |
| 6 |
| 27 |
| 8 |
=6-8
=-2.
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