用计算器计算(结果精确到0.01).(1) 20

2024-12-17 01:37:47
推荐回答(1个)
回答1:

(1)
20
-7
6

=4.472-7×2.450,
=-12.678,
≈-12.68;

(2)
3 516.8
=8.0249222793753≈8.02.
故答案为:(1)-12.68,(2)8.02.