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简便计算5/9%2/1+5/6竖式计算

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

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

那么题目呢?

大哥,我来

2.56×28-2.7×25.6+0.256×450 =2.56×28-27×2.56+2.56×45 =2.56×(28-27+45) =2.56×46 =117.76 竖式见图:

(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....

1.25×14×4 =25×4×14 =100×14 =1400 2.125×19×8 =125×8×19 =1000×19 =19000 3.20×8×5 =20×5×8 =100×8 =800 4.6×26+4×26 =(6+4)×26 =10×26 =260

640÷80= 15×5= 23×3= 12×2×5= 480÷80= 16×5= 27×3= 90÷15= 48÷4= 640÷16= 39÷3= 24×20= 32×3= 48÷16= 12×8= 27×3= 56÷14= 24÷8= 14×2= 83-45= 560÷80= 96÷24= 40÷20= 40×30= 37+26= 76-39= 605+59= 30×23= 12×8= 27+32= 48+27= 4500×20= 7...

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