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4.8*12.5怎么简便

4×12.5+0.8×12.5 =50+10=60

怎样用简便计算 4.8×12.5 =0.6×(8×12.5) =0.6×100 =60

2.1乘12.5乘4.8,该怎么简便运算的

2.1×(12.5×4)×1.2=2.1×60=126

4.8×12.5=(5-2)×12.5=5×12.5-2×12.5=62.5-25=37.5

12.5x4.8 =12.5x8x0.6 =100x0.6 =60

2.5*4.8*12.5 =2.5*(0.6*8)*12.5 =2.5*(8*12.5)*0.6 =2.5*100*0.6 =25*6 =150

4.8*2.5*12.5 =1.2*(4*2.5)*12.5 =1.2*10*12.5 =12*12.5 =3*(4*12.5) =3*50 =150

1.2×(4×2.5)+2×(8×12.5)=1.2×10+2×100=212

4.8x12.5 =0.6x(8x12.5) =0.6x100 =60

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