5.6*69.32+138.64*0.05+693 - 知识问答

5.6*69.32+138.64*0.05+693.2*0.43怎样简算?

1个回答

5.6*69.32+138.64*0.05+693.2*0.43
=5.6*69.32+69.32*2*0.05+69.32*4.3
=5.6*69.32+69.32*0.1+69.32*4.3
=(5.6+0.1+4.3)*69.32
=10*69.32
=693.2

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