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简便计算5/9%2/1+5/6竖式计算

1、56X1.02-1.4X0.8 =56X1.02-56X0.02 =56×(1.02-0.02) =56×1 =56 2、67X4分之1+2又2分之1X3.75-4又2分之1X4分之1 =67X4分之1+4分之1X37.5-4.5X4分之1 =(67+37.5-4.5)×1/4 =100×1/4 =25

13-5.4+2.6 能简便算吗 =13+2.6-5.4 =15.6-5.4 =10.2

计算2100×50,可以将2和5对齐,用简便竖式计算。然后在积的末尾添上3个“0”。

(1)68.8÷4= (2)85.44÷16= (3)67.5÷15= (4)289.9÷18= (5)101.7÷9= (6)243.2÷64= (7)16.8÷28= (8)15.6÷24= (9)0.138÷15= (10)1.35÷27= (11)0.416÷32= (12)3.64÷52= (13)91.2÷3.8= (14)0.756÷0.18= (15...

590/60 =(60-1)/6 =10-1/6 =9又5/6

95×125=11875 竖式: 简便用脱式: 95×125 =96×125-125 =12×8×125-125 =12000-125 =11875

神马?

大哥,我来

(1)2.5*32*0.125 =(2.5*4)*(8*0.125) =10*1 =10 (2)3.5-7+6.5 =3.5+6.5-7 =3 (3)1.2×2.5+0.8×2.5 =2.5(1.2+0.8) =25 (4)8.9×1.25-0.9×1.25 =1.25(8.9-0.9) =10 (5)12.5×7.4×0.8 =12.5×0.8×7.4 =74 (6)6.5×9.5+6.5×0.5 =6.5×(9....

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