题目内容
计算:
(1)2
+
-
(2)-2
(
-
)
(3)(
-1)2+
(
-
)
(4)(π-3.14)0+
+(-
)-1-|1-
|
(1)2
| 2 |
| 8 |
| 50 |
(2)-2
| 3 |
| 12 |
| 1 |
| 4 |
| 2 |
(3)(
| 3 |
| 2 |
|
| 6 |
(4)(π-3.14)0+
| 18 |
| 1 |
| 2 |
| 2 |
(1)原式=2
+2
-5
=-
;
(2)原式=-2
×(2
-
)=-2
×2
+2
×
=-12+
;
(3)原式=3-2
+1+
-
=4-2
+1-2
=5-4
;
(4)原式=1+3
-2+1-
=2
.
| 2 |
| 2 |
| 2 |
| 2 |
(2)原式=-2
| 3 |
| 3 |
| ||
| 4 |
| 3 |
| 3 |
| 3 |
| ||
| 4 |
| ||
| 2 |
(3)原式=3-2
| 3 |
2×
|
| 2×6 |
| 3 |
| 3 |
| 3 |
(4)原式=1+3
| 2 |
| 2 |
| 2 |
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