题目内容
计算:
(1)23-
+|-7|
(2)(3.14-π)0-
+
(3)
+
-
(4)|
-3|-(1+
)0+
.
(1)23-
| 25 |
(2)(3.14-π)0-
| 3 | 27 |
| (-4)2 |
(3)
| 25 |
| 0.49 |
| 3 | 8 |
(4)|
| 2 |
| 2 |
| 4 |
(1)原式=8-5+7
=10;
(2)原式=1-9+4
=-4;
(3)原式=5+0.7-2
=3.7;
(4)原式=3-
-1+2
=4-
.
=10;
(2)原式=1-9+4
=-4;
(3)原式=5+0.7-2
=3.7;
(4)原式=3-
| 2 |
=4-
| 2 |
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