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1.25x48x0.25简便计算

原式=1.25x8x4x0.25=10x1=10

1.25*32*0.25=1.25*8*4*1/4=10

0.25x32x1.25=0.25x(4x8)x1.25=(0.25x4)x(8x1.25)=1x10=20

可以用下面的方法简便运算:1.25x48x0.5=1.25x4x6x2x0.5=5x6x1=30

7.2x1.25x0.25怎么简便计算7.2x1.25x0.25=(1.25*8)*(0.25*9)=10*2.25=22.5

64X0.25X0.5X1.25=(4x2x8)x0.25x0.5x1.25=(4x0.25)x(2x0.5)(8x1.25)=1x1x10=10 运用乘法交换律、结合律.希望能帮到你!

0.25x3.2x1.25=(0.25*4)*(0.8*1.25)=1*1=1

1.25X64X0.25 =1.25x8x2x4x0.25 =(1.25x8)x(4x0.25) =1x1 =1

1.25x75十125x0.25=125x(0.01x75+0.25)=125x(0.75+0.25)=125x1=125 谢谢,请采纳

1.25x16x0.25=1.25x8x2x0.25=10x0.5=5

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