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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

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 =

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

(1)6.8×0.75÷0.5,=68×(0.75÷0.5),=68×1.5,=102;(2)13.5÷2.5-2.75,=5.4-2.75,=2.65;(3)0.125×0.25×32,=0.125×0.25×4×8,=(0.125×8)×(0.25×4),=1×1,=1;(4)0.9+9.9+99.9+0.3,=(1-0.1)+(10-0.1)+(100-0.1)+0.3,=11...

0.125.很熟悉的一个数。0.125=125/1000=1/8 13.75/(1/8)=13.75*8 2.75*8 算式: 13.75*8-2.75*8 =(13.75-2.75)*8 =11*8 =88

3.75÷:

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