题目内容
计算:
(1)
×
(2)(-
)2-
+
(3)
-
+
(4)
(1-
)-3
.
(1)
| 8 |
| 18 |
(2)(-
| 6 |
| 25 |
| (-3)2 |
(3)
| 12 |
| 27 |
| 3 |
(4)
| 3 |
| 15 |
|
(1)原式=
=
=12;
(2)原式=6-5+3=4;
(3)原式=2
-3
+
=0;
(4)原式=
-3
-
=
-
.
| 8×18 |
| 144 |
(2)原式=6-5+3=4;
(3)原式=2
| 3 |
| 3 |
| 3 |
(4)原式=
| 3 |
| 5 |
3
| ||
| 5 |
=
| 3 |
| 18 |
| 5 |
| 5 |
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