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8/1×2.75+0.125×1又4/1+8/1=

全部换算成分数,还有写分数分母要写后面 8分之1是1/8 1/8×2.75+0.125×1又1/4+1/8 =1/8×2又3/4+1/8×1又1/4+1/8 =1/8×(2又3/4+1又1/4+1) =1/8×5 =5/8 8分之5

2.46875

答案及化简如下: 12.75/(1/8)-2.75*8=(12.75-2.75)*8=80 5.76/(1/4)+4.24*4=(5.76+4.24)*4=40 8.7*10.1-8.7*0.1=10*8.7=87

0.125×2.75+0.125×4.25+12.5% =0.125×2.75+0.125×4.25+0.125 =0.125×(2.75+4.25+1) =0.125×8 =1

1/8×2.75+0.125×17/4+12.5% =1/8×2.75+1/8×4.25+1/8×1 =1/8×(2.75+4.25+1) =1/8×8 =

1/8乘以2.75加0.125乘以1/4加12.5%的简便运算 1/8乘以2.75加0.125乘以1/4加12.5% =1/8*(2.75+0.25+1) =1/8*4 =1/2

脱式计算方法如下: 0.125X2.75+1/8X4.25+12.5% =1/8X2.75+1/8X4.25+1/8 =1/8X(2.75+4.25+1) =1/8x8 =1

2.75*0.19 0.125*1.9 =2.75*0.19 1.25*0.19 =0.19*(2.75 1.25) =0.19*4 =(0.2-0.01)*4 =0.2*4-0.01*4 =0.8-0.04 =0.76

递等式计算 3.75÷0.125-2.75 =30-2.75 =27.25

2.1×99+2.1 1.7×9.9+0.17 23×0.1+2...÷4+2.7X0.25 3.75X0.5-2.75÷2 5.26X0.125...2.31×1.2×0.5 14-7.32-2.68 2.64+8....

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