2.5x3.2x1.25的简便运算

鲜哀彭32742.5*3.2*1.25 -
扈朗娟13562467812 ______ 2.5x3.2x1.25 =2.5x4x0.8x1.25 =(2.5x4)x(0.8x1.25) =10x1 =10

鲜哀彭32742.5乘3.2乘1.25怎么简便 -
扈朗娟13562467812 ______ 2.5x3.2x1.25 =2.5x4x0.8x1.25 =10x1 =10

鲜哀彭32742.5*3点2*1点25用简便方法计算 -
扈朗娟13562467812 ______ 2.5*3.2*1.25=2.5*4*(0.8*1.25)=10

鲜哀彭32742.5x(3.2x0.125)用简便方法计算 -
扈朗娟13562467812 ______ 2.5x(3.2x0.125) =2.5*(0.4*8*0.125) =(2.5*0.4)*(8*0.125) =1*1 =1

鲜哀彭327430 - 1.25x9.9简便方法计算 -
扈朗娟13562467812 ______ 30-1.25x9.9简便方法计算=30-1.25x(10-0.1)=30-12.5+0.125=17.5+0.125=17.625

鲜哀彭327443.87x101 - 43.87 2.5x3.2x1.25这两题怎么简便运算?
扈朗娟13562467812 ______ 43.87x101-43.87 =43.87x(101-1) =4387 2.5x3.2x1.25 =2.5x4x0.8x1.25 =10x0.8x1.25 =8x1.25 =10

鲜哀彭32742.5x3.2x12.5用脱式计算 -
扈朗娟13562467812 ______ 计算过程如下: 2.5*3.2*12.5 =2.5*0.4*8*12.5 =(2.5*0.4)*(8*12.5) =1*100 =100 整数乘法的计算法则: 数位对齐,从右边起,依次用第二个因数每位上的数去乘第一个因数,乘到哪一位,得数的末尾就和第二个因数的哪一位对齐;然后把几次乘得的数加起来. 整数末尾有0的乘法:可以先把0前面的数相乘,然后看各因数的末尾一共有几个0,就在乘得的数的末尾添写几个0.

鲜哀彭32742.5*3.2*1.25怎样简便怎样算? -
扈朗娟13562467812 ______ 2.5*3.2*1.25 =2.5*4*0.8*1.25 =(2.5*4)(0.8*1.25) =10*1 =10

鲜哀彭32742.5x0.32x1.25简便公式 -
扈朗娟13562467812 ______ 2.5x0.32x1.25=2.5x0.04x(1.25x8)=0.1x10=1

鲜哀彭32742.5x0.32x1.25简算怎样算好? -
扈朗娟13562467812 ______ 2.5x0.32x1.25 =2.5*0.4*0.8*1.25 =1*1 =1 满意请采纳