-3.14x35.2+6.28x(-23.2)-1.57x36.8怎样简便运算

2024-12-14 23:32:58
推荐回答(3个)
回答1:


-3.14x35.2+6.28x(-23.2)-1.57x36.8
=-3.14x35.2+3.14x(-46.4)-3.14x18.4
=3.14x(-35.2-46.4-18.4)
=3.14x(-100)
=-314

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回答2:

-3.14x35.2+6.28x(-23.2)-1.57x36.8
=-3.14×35.2-3.14×46.4-3.14×18.9
=-3.14×(35.2+46.4+18.9)
=-3.14×100.5
=-3.14×(100+0.5)
=-314-1.57
=315.57

回答3:

解:﹣3.14×35.2+6.28×﹙﹣23.2﹚-1.57×36.8
=﹣3.14×﹙35.2+46.4+18.4﹚
=﹣3.14×100
=﹣314