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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

1.2÷0.25 =1.2÷1/4 =1.2x4 =4.8

3.2÷0.25=(3.2×4)÷(0.25×4)=12.8÷1=12.8

(7.1×4)÷(0.25×4) =28.4÷1 =28.4

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”。

转为分数 1/(1/8)+2/(1/4)+3/(1/2)

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:...

(8.4+2.916÷0.81)÷0.25 = (8.4+3.6)÷0.25 =12÷1/4 =12×4 =48

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