题目内容
求下列各式的值(后两小题用计算器计算,结果精确到0.01):
(1)-
;(2)-
;(3)
;(4)
;(5)
;(6)
+
.
(1)-
| 144 |
| (-8)2 |
1
|
| 3 | 16×20×25 |
| 7.628 |
| 3 | 57.6 |
| 3 | -4.96 |
(1)-
=-12;
(2)-
=-
=-8;
(3)
=
=
;
(4)
=
=
=20;
(5)
≈2.762;
(6)
+
≈3.862-1.705=2.157.
| 144 |
(2)-
| (-8)2 |
| 64 |
(3)
1
|
|
| 4 |
| 3 |
(4)
| 3 | 16×20×25 |
| 3 | 8000 |
| 3 | 203 |
(5)
| 7.628 |
(6)
| 3 | 57.6 |
| 3 | -4.96 |
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