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1.25乘0.32乘2.5加2.5(简便计算)

=1.25×0.8×0.4×2.5+2.5 =1×1+2.5 =3.5

无法正常回答

用简便方法计算0.4乘2.5乘12.5乘0.8和0.32乘1.25。 0.4乘2.5乘12.5乘0.8和0.32乘1.25。 =(1.25*0.8)*(0.4*2.5)+(1.25*0.8)*0.4 =1*1+0.4 =1.4

1.25×5.32×0.8 =1.25×0.8×5.32 =5.32

(1)2.5×32×1.25 =(2.5×4)×(8×1.25),=10×10,=100;(2)(512+56-38)÷124=(512+56-38)×24,=512×24+56×24-38×24,=10+20-9,=21;(3)719×67+1319÷76-67=719×67+1319×67-67,=(719+1319-1)×67,=119×67,=6133.

2.5*0.4*0.8*1.25 1*1 1

解: 1.25x2.5x0.32 =(1.25*0.8)(2.5*0.4) =1*1 =1

能简便的简便 1.25×0.32×2.5 =(1.25×0.8)×(0.4×2.5) =1×1 =1

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

原式=1.25x8x4x2.5 =(1.25x8)x(2.5x4) =10x10 =100

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