简便计算(999*999+999)*0.01

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简便计算(999*999+999)*0.01简便计算(999*999+999)*0.01简便计算(999*999+999)*0.01=[999*(999+1)]*0.01=999*1000*0.01=

简便计算(999*999+999)*0.01
简便计算(999*999+999)*0.01

简便计算(999*999+999)*0.01
=[999*(999+1)]*0.01
=999*1000*0.01
=999*(1000*0.01)
=999*10
=9990

(999*999+999)*0.01
=999(999+1)*0.01
=999*1000*0.01
=999*10
=9990