题目内容
用计算器计算(结果精确到0.01).
(1)
-7
≈______;
(2)
≈______.
(1)
| 20 |
| 6 |
(2)
| 3 | 516.8 |
(1)
-7
,
=4.472-7×2.450,
=-12.678,
≈-12.68;
(2)
=8.0249222793753≈8.02.
故答案为:(1)-12.68,(2)8.02.
| 20 |
| 6 |
=4.472-7×2.450,
=-12.678,
≈-12.68;
(2)
| 3 | 516.8 |
故答案为:(1)-12.68,(2)8.02.
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