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1.5X0.32X1.25的简便算法

=1.5ⅹ0.4ⅹ(0.8ⅹ1.25)二 =0.6ⅹ1 =0.6

1.5×0.32×1.25 =(1.5×0.4)×(0.8×1.25) =0.6×1 =0.6 5.24+5.24×99 =5.24×(1+99) =5.24×100 =524 0.8×[13-(3.12+5.28)] =0.8×(13-8.4) =0.8×4.6 =(1-0.2)×4.6 =4.6-0.92 =3.68 7.45×5.2÷2.6 =7.45×(5.2÷2.6) =7.45×2 =14.9

2.5*0.4*0.8*1.25 1*1 1

能。 原式=(2.5×4)×(0.08×1.25) =10×0.1 =1

1.25×0.32×0.25 =1.25*0.8*0.4*0.25 =(1.25*0.8)*(0.4*0.25) =1*0.1 =0.1

=0.04×8×2.5×1.25 =0.04×2.5×8×1.25 =0.1×10 =1

1.25×0.32×8 =(1.25x8)x0.32 =10x0.32 =3.2 请采纳正确答案,你们只提问,不采纳正确答案,回答都没有劲!谢谢管理员推荐采纳!! 朋友,请【采纳答案】,您的采纳是我答题的动力,如果没有明白,请追问。谢谢。

1.25×0.59×0.8 =1.25×0.8×0.59 =1×0.59 =0.59 9.8×25 =(10-0.2)×25 =10×25-0.2×25 =250-5 =245 0.32×1.25 =0.4×0.8×1.25 =0.4×(0.8×1.25) =0.4 0.4×2.5×12.5×0.8 =(0.4×2.5)×(12.5×0.8) =1×10 =10

2.5x1.25x0.32 =2.5×1.25×(0.4×0.8) =(2.5×0.4)×(1.25×0.8) =1×1 =1

1.25x0.32x2.5+2.5 =1.25x0.8x0.4x2.5+2.5 =1.25x0.8x(0.4x2.5)+2.5 =1+2.5 =3.5

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