9999乘999等于几?
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![9999乘999等于几?](/uploads/image/z/593550-54-0.jpg?t=9999%E4%B9%98999%E7%AD%89%E4%BA%8E%E5%87%A0%3F)
9999乘999等于几?
9999乘999等于几?
9999乘999等于几?
9989001
9989001
9999*999可用简便计算
=(10000-1)*999
=10000*999-1*999
=9990000-9999
=9989001
9999*999可用简便计算
=(10000-1)*999
=10000*999-1*999
=9990000-9999
=9989001
9999*999
=(10000-1)*(1000-1)
=10000000-10000-1000+1
=9989001