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4.8×12.5的简便运算

2.1乘12.5乘4.8,该怎么简便运算的

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

4.8×0.8×12.5 =0.8*12.5*4.8 =10*4.8 =48 满意采纳奥 有疑问请追问~

4.8*12+5.2*12 =12*(4.8+5.2) =12*10 =120

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

简便运算12.5×20.4+12.5×9.6-1.25=12.5×(20.4+9.6)-1.25=12.5×40-1.25=500-1.25=498.75

求“0.8 x 0.25 x 0.4 x 12.5 =”的简便运算 运算思路:先按照相乘化整数的方法,0.8乘以12.5等于10,0.4乘以0.25等于0.1,再计算10乘以0.1等于1。 0.8 X 0.25 X 0.4 X 12.5 = ( 0.8 X 12.5 ) X ( 0.25 X 0.4) = 10 X 0.1 = 1

12·5×0·4 =(10+2.5)x0.4 =10x0.4+2.5x0.4 =4+1 =5

4.8*8分之1=0.6 5*四分之十*八分之100*64=10000 6.5*(12.8-2.8)=65

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