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1.2÷0.25怎样写简便计算

1.2÷0.25 =(1.2×4)÷(0.25×4) =4.8÷1 =4.8 你好,本题已解答,如果满意 请点右下角“采纳答案”。

2.1÷0.25=8.4 ~回答完毕~ ~\(^o^)/~祝学习进步~~~

4.2÷(5.25÷0.25) =4.2÷[(5+0.25)÷0.25] =4.2÷[5÷0.25+0.25÷0.25] =4.2÷[20+1] =4.2÷21 =0.2 希望可以帮到你。

简便算法如下: 方法1: (7.1*4)÷(0.25*4)=28.4÷1=28.4 方法2: 710/25=28.4 简便算法的公式: 1/[n*(n+1)*(n+2)]=(1/n*(n+1)-1/(n+1)(n+2)]/2 1/ (n*(n+1)) = 1/n - 1/(n+1) 涉及简便算法的题目: 1/1×2+1/2×3+1/3×4+····+1/2005×2006 解:...

2.1÷0.25×4 =2.1×4÷0.25 =2.1×4×4 =8.4×4 =33.6

3.4÷0.25 =(3.4×4)÷(0.25×4) =13.6÷1 =13.6 运用了商不变的性质

1.8÷0.25 =1.8x4 =7.2

原式等于 0.95÷0.25×75% =0.95×4×3/4 =0.95×3 =2.85 所以原式的计算结果为2.85

=2.1÷(0.25x4) =2.1÷1 =2.1

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