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1.6乘2.5的简便计算

1.6×2.5 =4×0.4×2.5 =4×(0.4×2.5) =4×1 =4

2.5乘1.6简便算法这样做: 2.5x1.6 =2.5x(4x0.4) =(2.5x4)x0.4 =10x0.4 =4

2.5×1.6 =4×(0.4×2.5) =4×1 =4

=30×4÷(2.5×4)+0.4×(4×2.5) =120÷10+0.4×10 =12+4 =16

(1.6 1.6 1.6 1.6)*2.5=(1.6*4)*2.5=1.6*(4*2.5)=1.6*10=16 一般看到25什么的就想办法找4或4的倍数啦~ 希望帮到你~

1.6×2.5×7.5的简便运算是什么脱式计算 1.6×2.5×7.5 =2.5x4x0.4x2.5x3 =10x1x3 =30 希望能帮到你

30/2.5+1.6*2.5 =30*0.4/(2.5*0.4) +2.5*1+2.5*0.6 =12+2.5+1.3 =12+3.8 =15.8

1.6×1.25×2.5能简便计算 解:采用拆分法和结合律, 原式=2x0.8x1.25X2.5 =(2x2.5)x(0.8x1.25) =5x1 =5

25x1.6 =25x4x0.4 =100x0.4 =40

0.29×2.5×1.6 =(0.29×4)×(2.5×0.4) =1.16×1 =1.16 你好,本题以解答,如果满意,请点右下角“采纳答案”,支持一下。

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