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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

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

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:...

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”。

3.2÷0.25=(3.2×4)÷(0.25×4)=12.8÷1=12.8

1÷0.125+2÷0.25+3÷0.5 =1÷1/8+2÷1/4+3÷1/2 =1×8+2×4+3×2 =8+8+6 =22

转为分数 1/(1/8)+2/(1/4)+3/(1/2)

0.85-0.5=0.35, 0.63+0.7=1.33, 100×8.5=850, 1.25×37.5×8=375, 1.8+1.2×9=12.6, 0.3 2 =0.09, 1÷0.25=4, 0.45÷0.09×5=25, 0.3÷0.15=2, 0.4-0.4÷2=0.2, 1.6×1.1=1.76, 0.8×0.2÷0.8×0.2=0.04.

7.1÷0.25 =(7.1x4)÷(0.25x4) =28.4÷1 =28.4

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