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计算下面各题(能简算的要简算).807×99+807;[1-(12-14)]×25;20.0

2022-08-14 02:57:55 问答库 阅读 200 次

问题详情

计算下面各题(能简算的要简算).
807×99+807;
[1-(1

2

-1

4

)]×2

5


20.01×83+1.7×200.1;
(1.5+22

3

)÷3.75-2

3


6

5

×3

8

+5

8

÷5

6

参考答案

(1)807×99+807
=807×(99+1)
=807×100
=807;

(2)[1-(12-14)]×25
=[1-14]×25
=34×25
=310;

(3)20.01×83+1.7×200.1
=20.01×(83+17)
=20.01×100
=2001;

(4)(1.5+223)÷3.75-23
=416÷3.75-23
=119-23
=49;

(5)65×38+58÷56
=65×(38+58)
=65×1
=115.

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