18.76*9.9+100.1简便计算

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18.76*9.9+100.1简便计算
18.76*9.9+100.1简便计算

18.76*9.9+100.1简便计算
18.76*9.9+100.1
=18.76*(10-0.1)+100+0.1
=18.76*10-18.76*0.1+100+0.1
=187.6+100+0.1-1.876
=287.6-1.776
=285.824