简便计算4.25×5.24+1.52×2.51

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简便计算4.25×5.24+1.52×2.51
简便计算4.25×5.24+1.52×2.51

简便计算4.25×5.24+1.52×2.51
4.25*5.24+1.52*2.51
=(4+0.25)*(5+0.25-0.01)+(1+0.5+0.02)*(2+0.5+0.01)
=(4*5+4*0.25-4*0.01)+(0.25*5+0.25*0.25- 0.25*0.01)+(2+0.5+0.01+0.5*2+0.5*0.5+0.5*0.01+0.02*2+0.02*0.5+0.02*0.01)
=20.96+1.31+2.51+1.3052
=26.0852

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